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Simond Men's Merino Wool Long-Sleeved Backpacking T-Shirt - MT900
With high weight (240 g/sqm), a stand-up collar and thumb loops, this t-shirt will keep you warm in the depths of winter.
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San Francisco, 735 Market St. Options
Select an available color and size to see options.
About this item:
- Warmth: This thick T-shirt (8.5 oz/m²) with Merino wool is comfortable up to 50°F
- Weight: 5.1 oz in size M.
- Odor control: Merino wool naturally prevents unpleasant odors
Product Features

Warmth
This thick t-shirt (240 g/sqm) made from wool is comfortable down to 10°C
Breathability
Inner side knitted in channels and easy ventilation with zip
Odor control
The component limits perspiration odours. Laboratory test ISO 17299-3
Abrasion resistant
Use of a wool yarn protected by a surrounding polyamide yarn
Softness
Ultra-fine wool (18.5 microns). It is soft and pleasant to wear
Weight
The t-shirt weighs just 350 g in size L. 240 g/sqm and 260 g/sqm fabrics
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Product Customer Reviews
Wore this for climbing in the Lake District in late December. Price point is perfect, and layered properly it’s perfect at keeping you warm and dry.
Great jersey and good price
Used for Scottish winter climbing. Soft and stretchy. Very long arms and paneled warm back. 10/10 would recommend.
Very good product from decathlon great for colder days in winter for trekking cycling etc Size down if possible for fitted look
This is top of the range as far as Merino wool clothing is concerned . It is 100% Merino Wool not a mixture , so it really has the very best odour resistance even if you wear on successive days out hiking or working in the garden. I have tried various brands from various shops and this is till best value for money. There are cheaper options within Decathlon but they are cheaper for a reason. If you need the best , this is the best
This could be such an excellent product. However, it continues to lose fluff when you wear it, when you wash it. It causes a problem with the washing machine. This product will not last very long. What a pity
Bought this top as a mid layer skiing too and it performed really well.
Good percentage of merino wool in this top. It's heavier than the other merino tops. Nice style, with the contrast yellow zip pills, and it has a small slanted chest pocket. Probably around 20% cheaper than other big name branded merino tops. Very warm and light, great mid-layer.
Fab value. Really good fit and so versatile. The long front zip is perfect to help with cooling off. It also washes great on a standard (not wool cycle!) 40° wash without shrinking - I found that out by accident. I’ve bought a couple of these now as I really find them super comfortable.
Very comfortable to wear thanks to the soft-touch material and the warmth, which is pleasant without being unbearable. It breathes well, so it's also quite affordable. As for the price, I think it's fairly reasonable when compared to similar products from competing brands.
The material is really great but it's expensive.
super
Great, warm, comfortable, wide open on the chest, practical little pocket.
I bought this long-sleeved merino wool trekking T-shirt for gravel cycling as a second base layer, perfect, except for the price.
Good product
Size Guide

Additional Product Information
Composition
Main fabric: 89.0% Wool, 11.0% Polyamide ; Yoke: 9.0% Polyamide, 63.0% Wool, 4.0% Elastane, 24.0% Acrylic
What are the fabrics used on this hybrid t-shirt?
This t-shirt has a hybrid design to enable the optimal balance between warmth and breathability.We use 2 fabrics:- the main fabric made from 89% wool and 11% polyamide (for durability). 240 g/sqm- the fabric used as inserts, particularly at the back and inside of the forearms is made from 63% wool, 24% acrylic (facilitates drying), 9% polyamide (for durability) and 4% elastane. 260 gr/sqm
What steps are recommended before wearing a merino wool t-shirt for the first time?
For a softer feel, wash your t-shirt before first use.
How to wash your t-shirt made with wool
We recommend that you machine wash your MT900 WOOL T-shirt at 30°C on a normal cycle, preferably with liquid detergent.Dry flat and NEVER tumble dry unless you want it to shrink by one or two sizes!https://support.decathlon.co.uk/how-to-maintain-a-wool-garment.
Origin
Imported

Simond Men's Merino Wool Long-Sleeved Backpacking T-Shirt - MT900
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
