山と道

Alpha Haramaki

48g

¥5,500 Tax included

Introduction

Keeping your belly warm

Our Alpha Haramaki is made for late-night and early-morning hikers and runners to help them keep warm when temperatures are low.

The advanced Polartec Alpha Direct offers excellent heat retention as well as breathability keeping your belly warm.

Color

  • Blue
  • Burgundy
  • Friar Brown
  • Black

Specs

Made in Akita, Japan

Material:
Facing: Pertex Quantum Air (100% Nylon) 48g/㎡
C6 DWR (Durable Water Repellent)
Lining: Polartec Alpha Direct (100% Polyester) 136g/㎡
Zipper:
YKK #3 Coil Zipper
Weight:
48g (Size S)
53g (Size M)
60g (Size L)
Size:
UNISEX | S / M / L

Product Story

Keeping your belly warm

Akira Natsume, Yamatomichi Founder

Although I have never personally participated in a long-distance trail running race, I have been told by many trail runners that they often feel like quitting during races because their stomach and intestines are damaged by fatigue and the cold, making it impossible to eat while on the move.

Read more

I also realized the importance of keeping the abdomen warm when I had to reduce my gear to a minimum while fastpacking from the Sea of Japan to the Pacific Ocean. This experience made me want to create tools and clothing that protect the abdomen, resulting in the Merino Hoody (the old version; Updated 2021)
and the Alpha Anorak, but another idea that I came up with at the same time is the Alpha Haramaki.

We developed this belly band specifically for hiking and trail running making sure it’s easy to put on and take off and allows you to continue to stay active because it keeps you warm but doesn’t get stuffy.

2017

Form and Function

For high-intensity activity in the cold

The Alpha Haramaki is a belly band that has been developed for use during intense activity in cold circumstances, such as ridges with strong winds, snowy mountains, early mornings, and late nights.

Polartec Alpha Direct (136g/m2), which combines excellent heat insulation with good breathability, effectively repels moisture, even during high-intensity activity. The large velcro strips make it easy to put on and take off and keep the Haramaki snug while worn.

Thermal Comparison

Although it is not as warm as 1000 fill power down, the slightly thick Polartec Alpha Direct (136g/m2) used in the Alpha Haramaki is one of the best insulators available. The Alpha Haramaki can be used not only in action but also when resting, always keeping you warm.

Comparison:

The below chart compares the 1000 fill power down and other insulators used in thermal clothes on the market.

  • Heat retention is measured by JIS L 1096 A method, in Yamatomichi in-house test. The heat insulation property is measured from the amount of energy consumed by the heat-generating element to maintain its temperature. The maximum value is 100%.
  • The values of Polartec and Primaloft fabrics are the manufacturers’ catalog specs. Other fabrics’ values are measured by Yamatomichi. 1000 fill power down includes its 7 denier nylon outer and lining.

Material

Polartec Alpha Direct

  • Excellent air-permeability and thermal performance
  • Outstanding lightness and packability
  • Polygiene treatment for semi-permanent antibacterial and odor-control
  • Easy to wash, easy care

Conventional natural down and synthetic insulators tend to contain body moisture within the clothes and as a result, can be quite stuffy. Polartec Alpha Direct, on the other hand, is so air-permeable that it can be worn even during a high level of physical activity.

Alpha Direct is also treated by Polygiene odor control which safely reduces the microorganisms and bacteria by small amounts of silver ions, achieving antibacterial and deodorizing function that well exceeds the lifespan of ordinary garments.

Material:
Polartec Alpha Direct (100% Polyester) 136g/㎡

Spec:
Bursting strength measured by JIS L 1096 A (In-house test)
465kPa

Heat retention measured by JIS L 1096 A (In-house test)
57.6%

Heat retention measured by ASTM F1868 (Catalog spec)
Min : 0.80CLO Max:1.60CLO

Our Proprietary Titanium-coated Pertex Quantum Air

The Alpha Haramaki uses Pertex Quantum Air, which is made of a densely woven nylon yarn that is extremely lightweight, windproof, highly durable, and breathable.

While there are many variations of Quantum Air with different fabric thickness and finish, we use the fabric that is lightweight, has moderate stretch, and has a matte, comfortable texture. The durable water-repellent finish (DWR) keeps the rain away. It prevents excessive temperature rise inside the garment to keep you comfortable. It is suitable for intense activities in harsh environments.

Material:
Pertex Quantum Air 48g/㎡ (100% Nylon)
20d x 20d Ripstop
C6 DWR (Durable Water Repellent)

Spec:
Tear strength measured by JIS L 1096 D (In-house test)
Vertical: 0.9kg, Horizontal: 0.8kg

Tensile strength measured by JIS L 1096 A (In-house test)
Vertical: 35.6kg, Horizontal: 30kg

Ventilation performance measured by JIS 1096 A
33cc/ (㎠ s)

Size

製品サイズ/Product Size

Unisex
単位:cm
Size S M L
全長/Full Length 68~81 79~92 90~103
幅/Width 19 20 21

Instructions

Care Instructions

  • Use neutral detergent. Machine wash below 30°C.
  • Fasten zipper and velcros, and wash separately or use laundry net bag.
  • Do not bleach and do not use fabric softener.
  • Wring gently. Line dry in the shade.
  • Wring gently. Line dry in the shade.
  • Do not iron. Do not dry-clean.
  • If necessary, wash to remove fuzz from the fabric before first use.
  • The fabric may develop fuzz or pilling.

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.

Size Exchange

  • Overseas customers who need to change the size of their order, should note that the time needed for shipping will vary greatly depending on your country of residence.
  • We only accept exchanges when the item is unused (except for fitting).
  • If you wish to exchange the size of the item, please contact us within seven days of receiving your order.
  • Exchanges can only be made for the same color in a different size.
  • If the size you wish is out of stock, we will suggest a different color.
  • If the product is out of stock, we may simply have to ship the item back to you.
  • All shipping costs to be carried by the customer.
  • We will only send the exchanged item to you, upon receipt of return shipping cost via PayPal.
  • Please be aware that some countries charge customs duties depending on the price of the item.
  • We are unable to answer any questions on local customs. Please contact your local customs bureau.

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.

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