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🧥 Elevate your base game — comfort, performance, and style all in one sleek layer!
The Merino Wool Base Layer Men’s Long Sleeve Thermal Shirt by Merino.tech combines 100% superfine 17.5 micron Merino wool with advanced moisture-wicking, odor resistance, and UPF 50+ sun protection. Available in lightweight, midweight, and heavyweight options, it offers breathable, itch-free comfort and durability for year-round wear. Perfect for active professionals seeking versatile, stylish layering for hiking, skiing, or everyday office-to-outdoor transitions. Bonus premium Merino wool hiking socks included for added value.
























| ASIN | B08DG6MNSW |
| Age Range Description | Adult |
| Apparel Fabric Stretch | Medium Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Back Style | T Back |
| Best Sellers Rank | 19,889 in Fashion ( See Top 100 in Fashion ) 9 in Men's Thermal Tops |
| Bikini top style | Pullover |
| Brand Name | Merino.tech |
| Care instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Closure Type | Pull On |
| Closure type | Pull On |
| Collar Style | Collarless |
| Colour | .Black 250 |
| Country Of Origin | China |
| Country of origin | China |
| Cuff Style | Plain Hem |
| Customer Reviews | 4.4 out of 5 stars 5,587 Reviews |
| Embellishment Feature | No |
| Fabric Stretchability | Non-stretchable |
| Fabric Type | 100% Wool |
| Fit to Size Sentiment | Fits True To Size |
| Fitting type | Regular Fit |
| Garment Size Country | United States |
| Global Trade Identification Number | 08062281005633 |
| Hemline Form | Straight |
| Import Designation | Imported |
| Is Customizable? | No |
| Item Length | Standard Length |
| Item Type Name | Baselayer |
| Manufacturer | Merino.tech |
| Manufacturer Part Number | MLS-250 |
| Material Type | Cotton,Wool |
| Material composition | 100% Wool |
| Model Name | Men Ls |
| Model Number | MLS-250 |
| Neck Style | Crew Neck |
| Neck style | Crew Neck |
| Number of Items | 1 |
| Occasion Type | Birthday |
| Occasion description | Active |
| Pattern | Solid |
| Pocket Description | No pocket |
| Product Care Instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Season and Collection Year | All |
| Seasons | All |
| Shirt Form Type | Sport Jersey |
| Shoulder to Bottom Hem Length | 15.4 Centimetres |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Sport Type | Hiking, Camping and Hiking, Running, Climbing, Snow Skiing, Snowboarding, Mountaineering, Cycling |
| Style Name | Modern/Fitted |
| Ultraviolet Protection Factor | UPF 50 |
| Unit Count | 1.0 count |
| character | Sports |
A**G
Washes fantastic
Bought this for my husband, and he practically lives in it. Very good fit, washes fantastically, and is basically perfect for the cooler weather. It’s very comfortable to wear and soft near the skin. Quality item.
N**E
I love it
Love it. I took the plunge in a Merino.tech t-shirt last summer and I love it. I got this in the winter, mainly for when I'm on my motorbike. It's a top quality item. Very comfortable and warm. When worn over another merino top it's a great combination. I'm sold on merino - it is worth the cost. This is now my go-to brand for all my merino clothing. Oh, you sometimes get free merino socks too. They are also very nice on a motorbike in winter...
R**Y
Go for it, I now love merino wool.
Love this top, works well for walking and on the M,bike. cheaper than any product with bike on it. Well made and effective. I used this top mid winter in Austria when waking the streets for hours and also use on the bike. I shall purchase a thinner one for summer rides on the bike. I did find that it did not smell and it did a great job of keeping me dry, just don't add a cotton anything and it will work wonders.
R**N
I like
Very good thank you
C**S
Comfortable
Good base layer . Accurate fit , easy to wash , comfortable , warm ..., ....Looks shabby after several washes , so not ideal to be used as a top ( single ) layer. ... So overall its definitely worth the price
M**.
Wears and washes well.
A quality product! I have purchased these for my husband (6'5") on multiple occasions, they wear and wash well (we hang dry to avoid shrinkage). Have also gifted to family who also enjoy this. Very warm but not heavy, breathable and look great on it's own, but my husband typically wears as a base layer for work or for winter sport.
M**N
Sizing guide is inaccurate and price increased by£20 when tried to reorder!
Size guide inaccurate, based on size guide I ordered M, I would need XS judging on the vests that arrived. Tried to reorder but price now increased by £20 so bought alternative. Seem to be nice quality vests so quite disappointed. Also, bizarrely the free socks where L when the vest is M
J**_
Lovely, warm, thick and soft
Definitely top quality and worth the price. Feels great to wear, warm without overheating possibly the best I have ever had
K**R
Comoda calda e ottima qualita
Ottima qualita e comoda da indossare. Ne ho comprate altre con colori diversi
B**K
Second review, a great bargain 4/5
New review: 4/5 I have purchased 4 of these in the last years. The first ones, reviewed above were very thin and I did not review as good, but these last heavy ones I really like. They are very nice and warm, and they do not pick up any odor. They also fit well if you get the right size, and contrary to some other reviews I read do not get stretched out. The colors though limited are nice and the material seems much heavier and stronger. My only real criticism is that I don't like the logo on the left sleeze. I wish there were a way to remove it. Merino.tech is a good bargain for warm winter clothes. I would recommend and buy again as well. -- old review of lighter shirt -- Seriously, why make something like this if it is so thin as to be see-through. I guess I can put it under a sweater in mild cool weather, but this is not what I thought I was ordering. The free-socks are a nice touch, but it would have been better if they would have added the sock material to the shirt so it was not transparent.
S**K
Quality product especially for the cost
Seems to be a quality product. Fit is “athletic” and runs about true to size maybe a little small in the arms and belly. I wear a Medium in Smartwool and this fits a little tighter. Breathable and durable.
D**S
Great base layer
The shirt fits great. I bought it for hiking and to keep me dry . This will work much better than a cotton t-shirt that retains mosture and as the temp. changes it makes you cold and damp. this shirt is very light and works well along on warm days and very good as a base layer on colder hikes or as you get up to higher elevations and other layers are needed over this shirt.
J**S
Excelente
Fresca y cálida, suave y cómoda
Trustpilot
1 month ago
3 weeks ago