Top 10 Merino Mens Long Sleeve Thermal Baselayer Top UK – Men’s Thermal Tops

As an Amazon Associate I earn from qualifying purchases.

1. Smartwool

Black, Small, Smartwool Men's Merino 150 Baselayer Long Sleeve Boxed Thermal Tops

Smartwool - Flatlock seam construction designed to minimize chafing. Our lightest weight merino jersey fabric uses a nylon Core to increase Durability while still keeping 100% merino wool next to skin. Raglan sleeve design eliminates need for shoulder seams.
BrandSmartwool
ManufacturerSmartwool
Weight0.1 kg (0.22 Pounds)
Part NumberSW0140420011003
ModelSW0140420011003

2. Helly Hansen

Large, Helly Hansen Men Lifa Merino Crew Long Sleeve Thermal Baselayer Top, North Sea Blue

Helly Hansen - 2 layer construction ensures non itch by a comfortable next to skin layer. Flatlock seams for low bulk and next to skin comfort. 2-layer construction ensures comfort against skin. 215g/m2 fabric.
BrandHelly Hansen
ManufacturerHelly Hansen
Height40 cm (15.75 Inches)
Length60 cm (23.62 Inches)
Weight0.33 kg (0.73 Pounds)
Width40 cm (15.75 Inches)
Part Number48316-603-Large
Model48316

3. Mountain Warehouse

Great For Winter Black L, Mountain Warehouse Merino Mens Long Sleeve Thermal Baselayer Top, Lightweight Jumper, Warm, Antibacterial & Quick Drying Sweatshirt

Mountain Warehouse - Antibacterial - stay fresh & odour free for longer while walking and running. Breathable - the fabric allows perspiration to pass out of the garment, keeping you cool and comfortable. Lightweight - great for travelling, comfortable to wear and easy to pack. Quick wicking - actively wicks moisture away from the skin, keeping you dry and comfortable.
BrandMountain Warehouse
ManufacturerMountain Warehouse
Height5.21 cm (2.05 Inches)
Length19.99 cm (7.87 Inches)
Width17.81 cm (7.01 Inches)
Part Number023200005005
Model023200005005

4. HIKARO

HIKARO Men's Long Sleeve Crew Neck 100% Merino Wool Sweatshirt Baselayer Quick Dry Lightweight Thermal Underwear, Black L, Amazon Brand

HIKARO - You can comfortably wear these all day from sunup, to past sundown for whatever comes you way. Light weighthikaro uses interlock knit 100% imported Merino wool to ensure that this thermal will be your choice in cold weather. Pack less with clothing that doesn't need a wash after each use.

Fresher longerwhatever the season, this thermal will be a solid choice in your wardrobe as the Merino wool has naturally hygenic properties to keep you fresh through the day regardless of the weather. Care instructionsless washing with antibacterial clothing that stays dry, clean and fresh. Dries really fast, keeping you comfortable. Won't smell after weeks of wear, unlike cotton and synthetics. Comfortably warmone of the benefits of merino wool is that the material provides effective insulation while maintaining breathability to keep you at the optimal temperature.

As a medium thickness thermal, this can be worn as an underlayer that will wick away moisture while keeping you cosy and warm. Perfect giftthe 100% merino wool fabric and the stylishly simple packaging make it an ideal gift for your husbund, grandfather, boyfriend, father, sibling, or whomever you want to impress with some functional luxury that they can appreciate all year round.
BrandHIKARO
Part NumberHMRSL
ModelHMRSL

5. Extreme Essentials

Relaxed Fit Merino Base Layer/Baselayer, Extreme Essentials Mens Long Sleeve, Antibacterial, Quick Drying, Hard Wearing Black, Flat Seams, Lightweight top

Extreme Essentials - Naturally odour resistant to keep smells away on even the longest days. Curved hem to prevent ‘ride-up’ and cold spots. Premium quality blend of fibres for the perfect baselayer fabric. Raglan sleeve and flat seams to prevent chafing. Durable enough to take on the most extreme activities.
BrandExtreme Essentials

6. DILLING

DILLING Men's Merino Wool Base Layer, Long Sleeve Thermal Top Black L

DILLING - 100 years and four generations. This men's underlayer is ideal for outdoor activities such as, cycling, running, and its sweat wicking ability absorbs moisture, skiing, and hiking. It has undergone a 16-hour enzyme treatment process to remove all itchy hairs, making it soft against your skin and perfect for people with sensitive skin.

For now, but we are striving for 100%. The merino wool is warm and comfortable, keeping you dry whilst exercising. Over the last century, 90% of our products are organic, they have been adjusted and optimised, to give you a soft and sustainable product. Perfect for sports. Dilling has been a danish family run business for over a century.

Dilling's merino thermal vest is 100% merino wool with no added polyester. Sustainability is key. Our materials are eco-friendly and comfortable to wear. Our nordic swan ecolabel certified dyehouse uses no harmful chemicals or heavy metals, the environment, providing you with a clean and pure product. 100% merino wool. Made with care. At dilling, we care about animal welfare, the health of our workers, and you.
BrandDILLING
Part Number9916-112-999
Model9916-112-999-L

7. Smartwool

M, Smartwool Men's Merino 150 Baselayer Long Sleeve Boxed Base Layer, Black

Smartwool - Flatlock seams prevent chafing. Forward side seams for a figure-hugging fit. Selected shades have been dyed using a vegetable dyeing technique. Offset shoulder and side seams ensure better comfort and reduce chafing.
BrandSmartwool
ManufacturerSmartwool
Weight0.3 kg (0.66 Pounds)
Part NumberSW0007490011004
ModelSW0007490011004

8. Extreme Essentials

Hard wearing | Ideal for Skiing, Close Fit Merino Base Layer / Baselayer, antibacterial, Mens Long Sleeve, Trekking, Lightweight top, Flat seams, Hiking, Cycling, Quick drying

Extreme Essentials - Longer back than any other baselayer to prevent ‘ride-up’ and cold spots. Premium quality blend of fibres for the perfect baselayer fabric. Naturally odour resistant to keep smells away on even the longest days. Durable enough to take on the most extreme activities. Raglan sleeve and flat seams to prevent chafing.
BrandExtreme Essentials
Part NumberEE-UDFMB

9. Bahob

S M L XL XXL Thermals M, Warm Underwear Baselayer, Bahob® Pack of 2 Men's Thermal Long Sleeve Top, Sky Blue

Bahob - Machine Washable. Comfort fit, the ribbed construction shapes to the contours of the body. 045 tog rating- hold more warm air close to the skin. Colour: white, Blue and Charcoal and Black. Pack of 2 men's thermal Long Sleeve Tops.
BrandBahob

10. FALKE

Merino Wool Blend, XL, Black Black 3000, 1 Piece, FALKE Men Wool Tech. Comfort Fit Long Sleeve Shirt

FALKE - Perfect fit and unrestricted freedom of movement for the highest wearing comfort when exercising. Sport thermals underwear with long sleeves and no pocket in regular fit for winter; great combined with FALKE sport shorts, leggings or 3/4 tights; great shape and colour retention; this round neck underlayer top can be washed at 30°C on a wool cycle.

Regular fit longsleeved base layer top: 33411; available in sizes: S, XL, M, L, XXL. Model number for the falke men's wool tech. Stretchy thermal sports t-shirt for man with no zip; keeps the body warm and dry during sport thanks to the double layer structure; odour-neutralising effect; for trekking, skiing, snowboarding, equestrian sports, walking, hiking, cross country skiing.

Single pack of long sleeve baselayer for men and teenage boys made of a soft merino wool blend engineered for sport; offers an ideal protection in cold to very cold outdoor temperatures; with reflective designer logo on chest.
BrandFALKE
ManufacturerFalke
Weight0.18 kg (0.4 Pounds)
Part Number33411
Model33411