Merino Hoody


¥17,600 Tax included


Hoody for Active Hikers

Featuring the basic design for hiking, our Merino Hoody made of 100% merino wool offers superior temperature and moisture control.

We decided to use a not-too-heavy material to avoid overheating, and added a center zipper in the front for added ventilation. The handy kangaroo pocket helps to keep your belly warm on cold days.


  • Deep Forest
  • Gray Marl
  • Navy
  • Espresso
  • Granite Green
  • Black


Made in Akita, Japan

100% Merino Wool 170-180g/m²
253g(Size XS)
282g(Size S)
305g(Size M)
327g(Size L)
346g(Size XL)
Unisex | XS / S / M / L / XL

Product Story

Keep Your Belly Warm

Akira Natsume, Yamatomichi Founder

In the autumn of 2015, when light snow started to fall before daybreak, I was trying to pass through the peak of Mt. Goryutake in the Japanese Northern Alps on a fast-packing hike, with only the bare essentials of gear. The strong wind penetrated my clothes and almost blew me off the cliff. I was wearing everything I had, but I was still freezing and near hypothermia! I thought it was too dangerous to keep going, and decided to rest until the next morning. As I opened my backpack to get my sleeping bag, I remembered the Minimalist Pad in my pack.

“How about wrapping this around my waist?” I thought. My idea was to wrap the sleeping pad around my belly for insulation, which I had tried before when camping. I wrapped the pad around my waist and put on my rain jacket. I was still shivering but gradually felt my belly getting warmer and started to walk again. As I saw the Sun rose, I managed to get through the dangerous section. I had never been happier or more thankful to see the Sun before or since!

What I realized through my bitter experience is the importance of keeping your belly warm: when your belly is cold, you feel slow and dull, but as long as it’s kept warm, you can keep going. But when the upper part of your body is too hot, you feel overheated, and eventually lose your energy, so I decided to make something focusing on keeping the belly nice and warm.

When I started thinking about ideas for products with good belly insulation I realized that the classic sweat hoody might just be right. The kangaroo pocket keeps your belly warm because of the added layer of fabric for the pocket. Furthermore, items stored in the pocket increase the warmth and windproof performance at the belly. The ribbed hems can also double as simple wrist warmers.


Form and Function

Form Follows Function

What we ultimately set out to make was a super functional 100% merino wool base/middle layer.

Our hoody uses middleweight material perfect for spring through early winter. Additionally, the kangaroo pocket, with the additional layer of fabric, offers you excellent warmth where you most need it at your belly.

After much testing to find the most functional design of an ideal base/middle layer, we concluded that the classic sweat hoody design would be perfect. The half zip is equipped with a large tap for easy opening/closure even with gloves on and it can be opened from the neck to the pit of the stomach.

Why hoody?

When feeling a little cold, just put on the warm hood for quick and comfortable added warmth. In extremely cold and snowy mountains, balaclavas that cover your nose will keep you warmer, but except for these rare occasions, generally, we think balaclavas are a bit too much. Our hoody’s zipper ends at the chin and is adjustable with the 2mm stretch cord and a simple stopper, allowing for easy adjustment on the go.

Warm kangaroo pocket

If you are a long-distance racer who keeps running all night long, you know the importance of keeping your belly warm: the more you get tired, the colder you feel around your stomach and waist. Our hoody has a kangaroo pocket, where the fabric is doubled, achieving an added layer of insulation. You can further windproof or insulate the pocket by stowing a map or small items such as gloves in the pocket.

Ribbed Cuffs and Hem

In order to keep your body temperature stable, your neck, wrists and ankles should be kept warm, allowing for your bloodstream to flow smoothly. The ribbed cuffs work as simple wrist warmers. The stomach and waist are also sensitive to cold, so the material of the hem is ribbed and thickened.

The sleeves are easy to roll up if needed.

Naturally Odor Resistant

Wool base layers 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…

Great moisture control

Wool is great to help you keep warm and cool as it naturally controls the moisture level within the clothes, always keeping you comfortable throughout the year.

Even warm when wet

First, when wool absorbs moisture, the thermal phenomenon called “absorption heat” is generated. Secondly, its excellent insulation properties (low thermal conductivity) prevents the body heat from being lowered by evaporation. Also, the crimped fibers are bouncy and retain loft without crushing even when wet.
In addition, wool can absorb more moisture in between the fibers, always keeping the skin dry and comfortable.

Consequently, 100% Merino wool keeps you warm during the action, even in severe weather that makes you wet to the skin.

A stronger Merino

We love all the functionality of merino wool but also wanted to make a strong and durable product. By using a combination of two strands of wool twisted together, known as “ply-yarning”, we managed to develop a 100% merino fabric that is as strong and durable as the more common synthetic/wool blended fabrics.



Made in Japan Merino

We developed this unique fabric with specialized textile professionals in Bishu (in Aichi and adjacent Gifu prefectures), the largest production area of wool garments in Japan. Our merino wool products are spun, yarned, dyed, and knitted in Japan.
It is soft, comfortable, and highly sweat-absorbing pure Merino.

100% Merino Wool
Weight: 170-180g/m²

Bursting strength measured by JIS L 1096 A (Mullen Type)

Insulation performance measured by JIS L 1096 A

Why 100% Merino?

Wool is a natural material with various unique features such as temperature/moisture control, thermal insulation, and is naturally odor-resistant. All 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 and baselayers.

All wool, including merino wool, is 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.

While many other manufacturers add synthetic fibers to strengthen their Merino fabrics, we wanted to stick with 100% Merino to maximize the natural benefits of pure merino wool. Our merino will keep you dry even when it’s hot and humid and comfortable no matter the climate.

Merino wool

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.

Wool’s structure

The wool’s fiber is composed of the 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 ortho-cortex and para-cortex, each with 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 the sweat.

Disadvantages of wool

As explained above, 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.

Shrinks easily

Wool generally shrinks easily, even when shrink-proofed. To reduce shrinkage, after the wash, please spread the shirt well to return to the original shape and gently iron it.


When knitted wool fabrics are washed, the material is likely to distort diagonally because the yarned fibers absorb water, swell, and tend to untwist. Consequently, the shape of the shirt may distort slightly with washing.

Distinctive smell

The wool comes from sheep and you may experience a distinctive animal-like smell coming from your t-shirt when damp. This smell usually disappears after the fabric dries.

The above information was compiled and edited based on the interview with the textile company and the research institute, and the reference book below:

Structure and Physical Properties of Wool, Japan Wool Industry Association, Seni Co., Ltd.


推奨サイズ/Recommended Size

Size XS S M L XL
42~53 51~61 59~69 67~78 76~85
78~84 80~88 84~95 92~102 100~110

製品サイズ/Product Size

Size XS S M L XL
着丈/Length 65 68.5 71.5 73 74.5
身巾/Body Width 47.5 51.5 54.5 57.5 60.5
裾巾/Hem Width 37 41 44 47 50
裄丈/Neck to Sleeve 76 79 81.5 84 86
袖口巾/Sleeve Opening 8 8.5 9 9.5 10
ファスナー丈/Zipper Length 26 27 28 29 30

Please Note

Care Instructions

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.

【How to Wash】
It is machine-washable, but please be careful with water temperature and machine settings as it may cause shrinkage. Because merino wool is a natural fiber, its fibers are short, and fuzz and pilling may appear, but after several washes, they will become less noticeable.

  • Wool fibers are slightly acidic, so avoid washing with alkaline detergent as it may damage the texture. Use a neutral detergent.
  • Close the zippers, if any, to avoid the damage caused by the contact with metal parts.
  • To avoid damage caused by contact with other laundry, or deformation caused by tangling, please wash it separately or use a laundry net.
  • Set your washing machine to “Gentle Course” or “Hand Wash Course” with gentle water flow. This will shorten the stressful process of wringing and dewatering, and minimize the risk of shrinkage and deformation.
  • Washing with lukewarm water (about 30℃) will help remove dirt even with gentle water flow.
  • Do not wash at high temperature as it may cause shrinkage.
  • Smooth out the wrinkles, adjust the shape, and dry flat in the shade. Line dry is not recommended as the wet fabric may be stretched by its own weight.
  • Do not tumble-dry, as the texture of the fabric may be hardened.
  • 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.
  • Washing may cause slight deformation or distortion due to the nature of the fabric.

【How to Remove Wrinkles】
Knit fabrics are less likely to wrinkle than woven fabrics, but if the wrinkles are noticeable, please iron the fabric. There is, however, a risk of fabric shrinkage if the fabric is continuously exposed to iron steam at an excessively high temperature. Please follow the precautions below when ironing.

  • Use a steam iron.
  • Steam must be low temperature (80℃-120℃).
  • Do not apply the iron surface directly to the fabric, but apply only steam to the wrinkled area. To prevent the fabric from shrinking due to the heat, gently stretch the fabric as you steam.
  • After steaming for a few seconds, gently smooth out the wrinkles with your hands.
  • If the wrinkles are still noticeable, apply a thin cloth and softly iron the fabric.
  • After ironing, dry completely.

【Straightening out shrinkage and shape】
Shrunk or deformed clothes can be restored by ironing them. However, there is a risk of fabric damage and shrinkage if the fabric is continuously exposed to high temperatures.

  • Do not strongly press the iron. Lightly iron with steam.
  • Always use the iron at a medium temperature (around 140°C to 160°C) setting or lower.
  • Avoid applying pressure, and let the steam blow over the fabric while slightly lifting the iron. If there is any shrinkage, apply steam while stretching out the fabric.
  • After blowing steam for a few seconds, stretch the fabric little by little while it is still moist by the steam to touch up the shape.
  • After the shape adjustments, leave it for a while without moving it. Dry it completely afterward.

【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 low 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. In this case, an insect repellent specially designed for vacuum bags is recommended. Air left in the bag will allow insects to survive.
  • if you choose to use moth balls, please follow the instructions found on the detergent.


  • 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.

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.


A natural fiber, merino wool has wonderful properties such as excellent temperature and humidity control and deodorant performances, but it also has a weakness; yarns are likely to break and develop holes due to abusive use and moth eating.

For inquiries on repairing holes or products damaged over time, please feel free to contact us from the “Repair” section of the SUPPORT page.

Needle Felting

Holes in merino wool cut-and-sewn products caused by thread breakage or moth bites can be repaired by felting, a technique to patch the hole with the raw wool using a special needle. You can repair by yourself, and Yamatomichi also offers felting repair services using raw wool of the same color as the product.

For more details of felting and how we repair the merino items, visit Yamatomichi JOURNALS 『山と道修理部通信#1 メリノウールの穴を補修する』(Japanese only).

Merino Hoody


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