山と道

ONE

603g

¥40,700 Tax included

Introduction

UL Framed Backpack for Long Hikes

The ONE is a large-volume, ultralight, framed backpack designed for long-term mountain traversing and long-distance hiking.

Rocky sections, ridges with chains, or steep uphill sections are pretty common in the Japanese hiking trails. The uniquely designed X-shaped frame fits your torso comfortably and let you move with ease even in these conditions.

As the ONE is a fully made-to-order backpack, please allow some time for your order to be delivered. We promise it will be worth the wait…

Custom Order Item
Our ONE backpacks are all unique and can only be ordered during specific periods of the year.

Current order period: May 26 – June 6
Delivery schedule: October or November

  • As they are completely made to order, please allow for ample production time.
  • Please note that we only accept a limited number of orders. We may close the reservation window if orders fill up quickly.

Shopping Cart Rules

Regular items, pre-order items, and custom orders cannot be purchased at the same time as they are shipped at different times. Also, please understand we are unable to ship items ordered separately in the same package.

Color

Examples of past orders:

Spec

Made in Kamakura, Japan

Capacity:
50L~55L / 3051~3356 cu in
Weight:
603〜823g / 1.3lb~1.8lb
Body Material:
70D HT PC Coated Ripstop Nylon
70D Silicone Coated Ripstop Nylon
X-Pac LS07
200D HT PC Coated Oxford Nylon
Outer Pockets Material:
70D HT PC Coated Ripstop Nylon
X-Pac LS07
X-Pac VX07
X-Pac VX21 soft
200D HT PC Coated Oxford Nylon
500D Cordura
Back Panel Material:
3D Mesh
200D HT Oxford Nylon
Bottom Material:
X-Pac VX21
X-Pac VX42 (Only when 500D Cordura is selected for the pocket)
Zipper:
YKK Aquaguard
Frame Material:
Carbon
Accesories:
Back Pad
Reflectable bungee cord
Repair tape

Product Story

For Longer Hikes

Akira Natsume, Yamatomichi Founder

Do we really love hiking? Are we fully prepared to start up our own business?

In order to find the answer to these questions, my wife and I hiked the John Muir Trail in Virginia, USA in 2010. Consequently, we realized that we loved hiking so much and decided to quit our jobs and start Yamatomichi. We also realized that Japanese trails are quite different from the ones in North America.

The John Muir Trail is very well maintained, but unlike Japan, rocky sections, ridges with chains, or steep uphill sections are rare. This means that in North America, a backpack is less likely to get scratched by rocks or branches that make holes, even when made from ultra-thin fabric. Also, the items in mesh pockets were unlikely to drop out accidentally on these gentle trails. And since the weather in North America is dry with little rainfall, you are less troubled by sweat even when a closed-cell foam pad directly touches your back or the pack’s back panel is not made from some kind of mesh material.

At the time, I realized that the ultralight hiking gear I was using back then was designed specifically for the American climate, environment, and trail conditions.

When my wife and I were about to start Yamatomichi, no ultralight backpack taking into consideration the conditions of the Japanese trails existed.

Even if the ultralight movement originated on the Californian trails, I realized that I did not have to just copy what was happening in the US, but I could use the ultralight theory and match with the conditions of the Japanese mountains to create a unique backpack made specifically for ultralight hiking here in Japan.

As we started Yamatomichi as a very small brand, we were super flexible and I decided that the ONE backpack should be a made-to-order, semi custom-made item that no other mass-production maker could match.

That’s why after ordering, still, our customers need to wait for several months before receiving the finished pack. But I firmly believe that each hiker will find the wait worthwhile and excited to become the owner of his or her unique one-of-a-kind backpack.

It’s been years since we released ONE but it is still one of our core products. There have been many small modifications and upgrades and the robustness and overall durability of the pack have improved since our first version.

So for anyone setting out on a longer hike with a need to carry a somewhat substantial amount of gear, ONE is still the backpack I recommend.

READ MORE

Form and Function

X-shaped Frame Fits Your Back

Conventional large-volume backpacks are designed to distribute the load around your waist. However, ONE’s frame, made of two carbon rods crossed in an X-shape, allows full control of the load distribution to fit your needs to direct the load to your waist or upper body, etc. This control function is achieved by ONE’s unique design:
The carbon X frame is connected with the waist stabilizers and the shoulder load lifters, allowing you to control the load position and adjust the pack at the most comfortable balance depending on the trail condition or according to your level of physical fatigue.

*The above function is achieved by the highly flexible carbon frame. But please note that the carbon frame itself is not so strong, so our recommended comfortable maximum load for ONE is 11 kilograms.

Flexible Load Control

You can easily control the load by adjusting the load lifters on the shoulders and stabilizer straps on the hips, allowing you to change the load position based on trail conditions and body fatigue.

For load distribution on the upper torso:
When encountering a steep uphill or rocky terrain, free your waist to distribute the load on your upper torso, so that you can walk comfortably using the entire lower part of your body.

1. Loosen the waist stabilizer straps.

2. Slightly tighten the shoulder load lifters.

For load distribution on the waist:

When getting tired towards evening, set the pack to distribute the load on your waist. Such adjustment will alleviate the upper torso fatigue, allowing you to go on walking further. We also recommend the load to be distributed on your waist on flat terrain.

1. Slightly loosen the shoulder straps.

2. Tighten the waist stabilizer straps to keep the carbon frame close to your waist.

3. Tighten the shoulder load lifters to keep the pack closer to your back. (Do not pull too tight.)

Design Born From the Japanese Trail Conditions

In Japanese mountains with much rainfall, items in the mesh pockets, which many ultralight backpacks use, may get wet. Mesh material can also be surprisingly heavy. This is why we adopted the highly water-resistant fabric for ONE’s front pocket.

Above the front pocket, ONE has another smaller pocket. With a water-resistant zipper, this pocket has a capacity of approximately 2.5 liters. Since your items might get lost in the large pocket, valuables can be stored more safely and conveniently in this smaller pocket.

Compress and Expand

ONE is a highly versatile pack in terms of the variability of the volume. Side compression cords can shrink the whole backpack to downsize the volume. On the other hand, the expandable roll-top will maximize the volume to carry additional gear.

Custom Order

ONE is a custom order backpack that matches your specific needs.

We offer five sizes of torso lengths and four sizes of hip belts.

Select from our range of different fabrics and colors for the main body, pockets, and waterproof zipper to create your own unique pack.

Please check the sizing guide and material description below to determine your size, material, and color you like, then proceed to the purchase page.

Preorders will also be accepted at the Yamatomichi Laboratory (Kamakura),Yamashokuon (Kyoto) and samplus (Taipei). For details, please contact each store.

*The Yamatomichi Laboratory is currently closed due to the effects of COVID-19.

Custom order

1. Measure your torso to select the right size.

We offer five sizes of torso lengths (XS, S, M, L, and XL) and four sizes of hip belts (XS, S, M, and L).

How to measure your torso

Decide your torso length based on the knobby bone located at each side of your hipbone.

1. Find the knobby bone at each side of your hipbone, and align your pants’ waistband at the knobby bones. The edge of the waistband is where the hipbone should be.

2. Find the backbone and extend the tape measure from the waistband to the back of your neck.

3. Slightly tilt your head forward to find the bony bump (7th cervical vertebra) and measure the distance from the waistband to the 7th cervical vertebra.


*The length from the edge of the waistband to the 7th cervical vertebra is defined as the torso length.
*To define the size of the hip belt correctly, make sure you wrap your tape measure around your hipbone. Be sure not to measure your waist.
*If you can’t decide between two sizes of the hip belt, we usually recommend the smaller size.

Customization

2. Select the fabric (material and color)

Please choose your preferred fabric for the body (roll-top and side panel), pocket material and color, and the color of the waterproof zipper from the below selection.

Select body fabric material

70D HT PC Coated Ripstop Nylon

70D HT PC Coated Ripstop Nylon

Material: 70 Denier High-tenacity Nylon, 
Polycarbonate Coating, DWR (Durable Water Repellent)
Weight: 106g/㎡

This 70 Denier HT (high-tenacity) ripstop nylon fabric is our proprietary material with enhanced strength and durability compared with conventional nylon. The surface is DWR (durable water repellent) finished, and the backside is polycarbonate coated, achieving a much better anti-hydrolyzation performance than regular polyurethane-based fabrics.

We use this mainly as the body material of our packs, but you can also select it for pockets.

In-house test results (Variations may occur according to the actual production lot):
Tensile strength (JIS L 1096 A method): 97.2kg (vertical), 63.6kg (horizontal).
Tear strength (JIS L 1096 A method): 6.8kg (vertical), 3.9kg (horizontal)
Water pressure resistance (JIS L 1092B): 4079mm

70D Silicone Coated Ripstop Nylon

70D Silicone Coated Ripstop Nylon

Fabric: 70 Denier Nylon,
Back silicone coating
Weight: 88g/㎡

This is the same fabric we use for our MINI backpack. It is a 70 denier ripstop nylon with a tough silicone coating on the back. Though tear strength is inferior to Westmark’s Skylite fabric, we think its thickness makes the fabric stronger and more durable than Skylite from an overall perspective. The silicone coating on the back means that repair tape won’t stick, but tape sticks fine on the front if repairs are needed.

Test results (Variations may occur according to the actual production lot):
Tensile strength (JIS L 1096 A method): 49.6kg (vertical), 42.3kg (horizontal).
Tear strength (JIS L 1096 A method): 1.9kg (vertical), 2.9kg (horizontal)

X-Pac LS07

X-Pac LS07

Fabric: 70 Denier Ripstop Nylon 
Surface polyester resin coating
Durable Water Repellent (DWR)
Material weight: 116g/㎡

X-Pac LS07 is the lightest among the X-Pac series we currently use. It is also highly water-resistant and abrasion-resistant with a firm texture, yet a certain softness. The resin coating creates a unique marbled pattern and makes the material less water-retentive, remaining lightweight even when it is wet. However, durability and strength are considered to be inferior to X-Pac VX07, and the water repellency of the surface coating can deteriorate with use.

Test results (Variations may occur according to the actual production lot):
Tensile strength (JIS L 1096 A method): 92.7kg (vertical), 42.3kg (horizontal).
Tear strength (JIS L 1096 A method): 3.5kg (vertical), 3.6kg (horizontal)
Water Pressure Resistance (JIS L1092 A method): 19986mm

200D HT PC Coated Oxford Nylon

200D HT PC Coated Oxford Nylon

Material: 200 Denier High-tenacity Nylon,
Polycarbonate coating, DWR (Durable Water Repellent)
Weight: 144g/㎡

This 200 denier HT (high-tenacity) ripstop nylon fabric is our proprietary material with DWR (durable water repellent) finished on the surface, while the backside is polycarbonate coated, achieving a much better anti-hydrolyzation performance than regular polyurethane-based fabrics.

We use this mainly as the body material of our packs, but you can also select it for pockets.

Test results (Variations may occur according to the actual production lot)
Tensile strength (JIS L 1096 A method): 206.0kg (vertical), 146.9kg (horizontal).
Tear strength (JIS L 1096 A method): 8.5kg (vertical), 7.0kg (horizontal)
Water-pressure resistance (JIS L 1092 B method): 4691mm

Select pocket material

70D HT PC Coated Ripstop Nylon

70D HT PC Coated Ripstop Nylon

Material: 70 Denier High-tenacity Nylon, 
Polycarbonate Coating, DWR (Durable Water Repellent)
Weight: 106g/㎡

This 70 denier HT (high-tenacity) ripstop nylon fabric is our proprietary material with enhanced strength and durability compared with conventional nylon. The surface is DWR (durable water repellent) finished, and the backside is polycarbonate coated, achieving a much better anti-hydrolyzation performance than regular polyurethane-based fabrics.

We use this mainly as the body material of our packs, but you can also select it for pockets.

In-house test results (Variations may occur according to the actual production lot):
Tensile strength (JIS L 1096 A method): 97.2kg (vertical), 63.6kg (horizontal).
Tear strength (JIS L 1096 A method): 6.8kg (vertical), 3.9kg (horizontal)
Water pressure resistance (JIS L 1092B): 4079mm

X-Pac VX07

X-Pac VX07

Material: 70 Denier Ripstop Nylon, Black polyester X-ply, 0.25 polyester film, 50 Denier polyester (Durable water repellent)
Weight: 162.7g/㎡

X-Pac VX07 is a multi-layer fabric comprised of 70 denier nylon on the surface, a water-resistant polyester film in the middle, and a 50 denier polyester taffeta and diamond-patterned black polyester X-Ply material at the back. It is highly durable and water-resistant with hydrostatic water-resistant structural technology.

Test results (Variations may occur according to the actual production lot)
Tensile strength (JIS L 1096 A method): 111kg (vertical), 92kg (horizontal).
Tear strength (JIS L 1096 A method): 10.5kg (vertical), 8kg (horizontal)
Water pressure resistance (JIS L 1092 A method): 40991mm

X-Pac LS07

X-Pac LS07

Fabric: 70 Denier Ripstop Nylon 
Surface polyester resin coating
Durable Water Repellent (DWR)
Material weight: 116g/㎡

X-Pac LS07 is the lightest among the X-Pac series we currently use. It is also highly water-resistant and abrasion-resistant with a firm texture, yet a certain softness. The resin coating creates a unique marbled pattern and makes the material less water-retentive, remaining lightweight even when it is wet. However, durability and strength are considered to be inferior to X-Pac VX07, and the water repellency of the surface coating can deteriorate with use.

Test results (Variations may occur according to the actual production lot):
Tensile strength (JIS L 1096 A method): 92.7kg (vertical), 42.3kg (horizontal).
Tear strength (JIS L 1096 A method): 3.5kg (vertical), 3.6kg (horizontal)
Water Pressure Resistance (JIS L1092 A method): 19986mm

200D HT PC Coated Oxford Nylon

200D HT PC Coated Oxford Nylon

Material: 200 Denier High-tenacity Nylon,
Polycarbonate coating, DWR (Durable Water Repellent)
Weight: 144g/㎡

This 200 denier HT (high-tenacity) ripstop nylon fabric is our proprietary material with DWR (durable water repellent) finished on the surface, while the backside is polycarbonate coated, achieving a much better anti-hydrolyzation performance than regular polyurethane-based fabrics.

We use this mainly as the body material of our packs, but you can also select it for pockets.

Test results (Variations may occur according to the actual production lot)
Tensile strength (JIS L 1096 A method): 206.0kg (vertical), 146.9kg (horizontal).
Tear strength (JIS L 1096 A method): 8.5kg (vertical), 7.0kg (horizontal)
Water-pressure resistance (JIS L 1092 B method): 4691mm

X-Pac VX21 soft

X-Pac VX21 soft

Material: 210 Denier Nylon, Black polyester X-Ply, Polyester resin, 50 Denier polyester (Durable water repellent)
Weight: 188g/㎡

This is a soft version of X-Pac VX21, which is adopted for the bottom material of our backpacks. X-Pac VX21 is a multi-layer fabric comprised of 210 denier nylon on the surface, a water-resistant polyester film in the middle, and a 50 denier polyester taffeta and diamond-patterned black polyester X-Ply material at the back. It is highly durable and water-resistant with hydrostatic water-resistant structural technology.

Test results (Variations may occur according to the actual production lot)
Tensile strength (JIS L 1096 A method): 119kg (vertical), 96kg (horizontal).
Tear strength (JIS L 1096 A method): 13.6kg (vertical), 13.8kg (horizontal)
Water pressure resistance (JIS L 1092 A method): 6526mm

500D Cordura Span

500D Cordura Spun

Material: 500 Denier Cordura Nylon (Backside polyurethane coating, Surface water-repellent coating)
Weight: 264g/㎡

This fabric is Yamatomichi’s thickest and heaviest, but also the strongest and toughest pocket material we offer. It is comprised of plain-woven 500 denier Cordura fiber. Cordura, the brand name of INVISTA’s nylon fiber, is more robust and durable than normal nylon and has a cotton-like matte texture. If you are looking for something strong and durable, where weight is less of a concern, this is the fabric to choose.

*If you choose the 500D Cordura Spun, the bottom material will automatically be X-Pac VX42.

Test results (Variations may occur according to the actual production lot)
Tensile strength (JIS L 1096 A method): 228kg (vertical), 122kg (horizontal).
Tear strength (JIS L 1096 A method): 11.2kg (vertical), 9.3kg (horizontal)

Select water-resistant zipper color

Please select from the following 14 colors for the water-resistant zippers.

Please Note

  • We do not accept cancellations of custom-orders after the production has started.
  • We accept cancellation or amendment of your order only during the ordering period.
  • Delivery may be delayed due to unforeseeable issues.

Care Instructions

  • Do not machine-wash. Hand-wash only.
  • Submerge the product in lukewarm water with a correct amount of neutral detergent, and hand-wash it.
  • Do not bleach. Do not use fabric softner.
  • Remove any optional parts such as pads before washing.
  • Wash off any noticeable stains or smudges with a washing brush or soft sponge.
  • Rinse well so that no detergent remains.
  • Drain the backpack with the mouth down. Keep dry in a shade.
  • Store in a cool, dark, dry place.
  • Do not iron.

Custom Order

  • Please note that delivery of any custom-orders usually take longer than our standard items.
  • Delivery may be delayed due to unforeseeable issues.
  • We accept only a limited number of custom-orders due to our limited production capacity.
  • We accept cancellation only during the ordering period.
  • We are not able to refund or exchange any items without any clearly noticeable manufacturing faults.
  • Custom-order is limited to one product per order.

Please contact us for any further inquiries from CONTACT.

Payment

  • We only accept payment by credit card. We currently do not accept payment via bank transfer from overseas accounts.
  • We accept the following Credit Cards: Visa, Master, American Express, and JCB.
  • To download your receipt, please click the link included in the Dispatch Notice, which we will send by email as soon as the items are dispatched.

Delivery

We will ship by DHL for overseas customers (excluding China, Hong Kong, Taiwan, Korea and Russia). For customers in China, Hong Kong, Taiwan, Korea and Russia, we will ship by EMS only. Shipping costs vary depending on your country and region.

Repair

We accept repairs for all of our Yamatomichi products. For inquiries on repair services including patching the holes, repairing with extra components, or fixing the items damaged over time, please feel free to contact us from the “Repair” section of the SUPPORT page.

Repair Tape

  • For temporary repair, please keep the repair tape in your emergency kit.
  • The repair tape should be patched up on both the front and back sides of the fabric. The tape must be larger than the damaged or torn part of the fabric.
  • If you round the edges of the patch, it will last longer.
Restock Alert


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