19,800 Tax included
Pure Merino Trail Shirt
The Merino Shirt is a trail shirt made of quality pure merino wool.
Woven by an established Italian manufacturer in New Zealand, the fabric is thin, and comfortable to wear without being too hot like most traditional wool shirts. It has all the natural deodorizing and moisture control features of wool, always keeping you comfortable.
The wide fit and open neck collar let the heat around the neck easily escape, offering comfort when it’s hot. Our proprietary design allows you to quickly roll up the sleeves, use the snap buttons for ventilation, or turn up the collar and button it up when it is cold.
This is a must-have wool shirt for any serious hiker.
Made in Fukushima, Japan
100% Merino Wool 130g/m²
187g (Size XS)
210g (Size S)
221g (Size M)
240g (Size L)
258g (Size XL)
UNISEX | XS / S / M / L / XL
Akira Natsume, Yamatomichi Founder
When it gets chilly, I wear merino from head to toe, both while hiking and at home, so it was only natural that I wanted to make a merino shirt.
However, I didn’t want to make a traditional warm and cozy flannel wool shirt that fits well in front of the fire, but rather a light shirt with the unique features of wool that wouldn’t be too warm when out hiking.
I searched for the right fabric and finally found one from a well-established Italian wool manufacturer, which also makes the fabric we use in the Yamatomichi 5-Pocket Merino Pants.
While the texture and feel of the elegant 100% merino wool fabric were great, it was still expensive and the weight of the fabric was quite heavy. I wasn’t sure this would be what I was looking for.
Tests of the fabric’s thermal insulating power showed that it was less effective than synthetic knits and bamboo polyester. It seems like even though it was wool, it didn’t offer many of the qualities in wool I was looking for.
At first, I thought maybe I should keep looking for another kind of fabric, but remembering that I initially wanted to make a wool shirt that didn’t get too hot, this actually might work really well despite the fabric’s low heat retention.
I made a prototype and tested it on a hike and found that it was quite strong, had good wicking, and above all, the moisture-absorbing function of wool was outstanding and it just felt wonderful to wear.
So what about our other shirts? Each of them has different pros and cons.
The main con of our merino shirts is the relatively high price. Also, you have to stretch it out by hand after washing and drying, otherwise, it will become very wrinkled. However, I feel that the comfort of 100% merino wool on the trails more than makes up for this high price. (December 2021)
Form and Function
Naturally Odor Resistant
Wool items are chosen by many hikers for the material’s excellent odor neutralizing performance. Some say it’s almost odor-free even after a week of heavy hiking, but we’ll let you (and your friends) be the judge of that…
Comfort through Superior Humidity Control
Merino wool, also known as “the natural air conditioner,” controls the temperature and humidity in your clothes guaranteeing your comfort at all times.
Woven fabric, which is often used as a material for shirts, is densely woven by warp and weft yarns. As a result, for the same weight and material, it is usually more windproof, dries faster, and is more durable than knitted fabrics, which are commonly used for base layers.
Furthermore, the UL Shirt adopts the basic “shirt” design, allowing for good ventilation by opening the front buttons. The essence of the shirt, the wind-protective fabric, and the good ventilation is namely the key feature of our hiking trail shirts.
On a chilly morning or late evening, turn up your collar and secure it with the added button to keep out the chill. A turned-up collar also helps to prevent your neck from getting sunburned when the sun is up.
Trail Shirt Series Comparison
Shadow Rip（100% Polyester）56g/m² C0 DWR
Ultralight, wrinkle-proof, and extremely portable. Highly versatile and easy to use, both as activewear and as a change of clothes. Soft to the touch.
100% Merino Wool 130g/m²
Keeps you comfortable with its high breathability and excellent temperature/humidity control. On the other hand, in midsummer, you may find wool a little too hot in the city or low mountains. Has a slightly firm texture similar to linen.
Bamboo Polyester (50% Rayon, 50％ Polyester) 118g/m²
Bamboo polyester material has deodorant and moisture control functions similar to wool and the functionality of synthetic fiber such as polyester. It has a moist texture and superior sweat absorbency compared to the other two products. It develops a unique texture over time.
|Lightness||Deodorant performance||Moisture control||Fast-dry performance||Wrinkle-proof||Strength||Breathability||Water-repellency||Insulation performance||UV protection|
- Moisture control: The property of keeping the humidity inside the garment at a constant level, dry when it’s damp, while moist when it’s too dry.
- Breathability: Higher means better ventilation, while lower means it is more wind-protective.
- UV protection: Ability to block the sunlight’s ultraviolet rays.
Why 100% Merino?
Our merino wool products are purely made of merino wool, with no synthetic fiber added. Why? Let me explain.
Merino wool has various unique features such as temperature/moisture control and odor-resistant performance and is perfect for hiking. However, it does have drawbacks that should not be underestimated: the tendency to deform and shrink, and poor durability.
To compensate for the drawbacks, many manufacturers add synthetic fibers to strengthen their merino fabrics. We, however, are certain that pure merino’s advantages outweigh its weaknesses, so we want to stick with 100% merino to maximize the natural benefits of pure merino wool.
As shown below, our in-house tests show that as the percentage of the synthetic fiber increases, merino wool’s natural advantages, such as temperature/moisture performance, inevitably decrease:
The Merino Shirt uses 100% merino wool fabric, which is manufactured by a long-established Italian maker that operates everything from raising sheep on its own farm in New Zealand to spinning yarn and weaving fabric.
Compared to the warm and soft fabric used for flannel shirts, it has a light and bouncy linen-like texture, and although it is 100% wool, it does not get too hot and keeps you comfortable.
100% Merino Wool 130g/m²
Tear strength tested by JIS L 1096 D (In-house test)
Vertical: 1.1kg, Horizontal: 0.8kg
Tensile strength tested by JIS L 1096 A (In-house test)
Vertical: 30.5kg, Horizontal: 19.4kg
Breathability tested by JIS 1096 A (In-house test)
Wool is a natural material with various unique features such as temperature/moisture control, thermal insulation, and anti-odor performance; all of them developed by sheep to survive the harsh environment over time.
Merino wool comes from merino sheep and compared to other kinds of wool, merino’s fiber is finer, softer, and less scratchy, and hence even suitable for making underwear.
All wools, including merino wool, are cool in summer and warm in winter. It is warm even when it’s wet, and practically odor-free even after many hours of wear.
The wool’s fiber is composed of amino acid-based protein, just like human hair and skin. The surface is called the “scale”, which is similar to a fish scale, and the inner part is the “cortex”.
The cortex is composed of the ortho-cortex and para-cortex, each with a different moisture absorption performance. Because each of them differs in property, the combination of ortho and para cortexes makes the fiber “crimped”.
This crimped structure produces the wool’s unique features such as moisture/temperature control property and thermal insulation performance, avoiding the coldness caused by sweat.
Disadvantages of Wool
Wool or merino wool has various features and functions, but it is not flawless.
- Easily absorbs moisture and becomes heavy
Wool can get quite heavy as it is great at absorbing moisture. This also means that wool takes longer to dry than synthetic fibers, but compared to cotton, it actually dries faster.
- Liked by insects
Soft, natural fibers such as wool, cashmere, and silk are prone to damage by insects.
- Easily damaged
The relatively short fibers of wool mean that wool fabrics are easier damaged than synthetic and cotton fibers. However, small holes can easily be fixed with a bit of pure wool and a needle.
推奨サイズ / Recommended Size
|体重 / Weight
|胸囲 / Chest
|着丈 / Length||67||70.5||72.5||74.5||76.5|
|肩巾 / Shoulder Width||39.5||42.5||44.5||47.5||51.5|
|身巾 / Body Width||53||58||60.5||64.5||69.5|
|裾巾 / Hem Width||49.5||54.5||57||61||66||袖丈 / Sleeve Length||55||60.5||61.5||63||64.5|
|袖口巾 / Sleeve Opening||9.5||10||10.5||11||11.5|
The design has been revised since 2022 as follows:
- The center, instead of the sides, of the back is pleated.
- The shoulder width has become slightly smaller.
- Instead, the sleeve length has become slightly longer and as a result, the overall measurement from the center of the back of the neck to the sleeve end remains the same.
Merino wool has excellent deodorizing properties, but it does have some disadvantages, such as being prone to moth holes and shrinkage. Therefore, It should be washed and stored properly, though not frequently.
For more instructions on washing, drying and storage at home, please read on the “Read More” section below.
It is machine-washable on the regular course. Please refrain from using the tumble dryer, as the texture of the fabric may be hardened. To reduce wrinkles after drying, smooth out wrinkles as much as possible before drying.
- Wool fibers are slightly acidic, so avoid washing with alkaline detergent as it may damage the texture. Use a neutral detergent.
- To avoid damage caused by contact with other laundry, or deformation caused by tangling, please wash it separately or use a laundry net.
- Wrinkles tend to develop during spin-dry. To reduce wrinkles, shorten the spin-dry time.
- Washing with lukewarm water (about 30℃) will help remove dirt.
- Smooth out the wrinkles, adjust the shape, and line dry in the shade.
- Do not tumble-dry, as the texture of the fabric may be hardened.
- Make sure to smooth out the wrinkles and hang dry in the shade.
- Do not use fabric softener as it may coat the fibers and hinder the natural properties of wool.
- Do not bleach as it may cause color fading.
How to Remove Wrinkles
Compared to knitted fabrics, woven ones tend to wrinkle more easily, so please shorten the spin-dry time and smooth out the wrinkles as much as possible before drying. If wrinkles still remain, please iron them out.
- Use a steam iron.
- Always use the iron at a medium temperature (around 140°C to 160°C) setting or lower.
- When ironing, apply a thin cloth while blowing the steam. If the iron is pressed excessively, the fabric may get unnaturally glossy. Iron gently.
- After ironing, dry completely so that no moisture remains.
How to Avoid Insect Damage
Merino wool, an animal-derived fiber, has the disadvantage of being easily eaten by insects because of the protein contained in the fiber. However, the risk of insect damage can be reduced by proper care.
- Dry well before storing. If there is any moisture left, it will be prone to insect damage.
- Steam from an iron can effectively kill insects by heat. Use a medium temperature setting when ironing, and after steam, dry it completely before storing it.
- Keep well-ventilated. Avoid humid environments.
- Vacuum storage bags are also effective in preventing insect damage. Air left in the bag will allow insects to survive. Make sure to completely vacuum it and make it air-tight before storing. Please note that vacuum sealing may cause wrinkles.
- if you use mothballs, please follow the labelled instructions.
- 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.
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.
- 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.
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.