Top 10 Base Layer Top Men UK – Men’s Thermal Tops

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1. Smartwool


Smartwool Merino 250 Base Layer 1/4 Zip Black 2XL

Smartwool #ad - Will help keep you cool when your intensity amps up, and its design helps minimize chafing. Odor-resistant. Temperature regulating.
BrandSmartwool #ad
ManufacturerSmartwool #ad
Height20.32 cm (8 Inches)
Length25.4 cm (10 Inches)
Weight0.36 kg (0.8 Pounds)
Width7.62 cm (3 Inches)
Part NumberSW016355001XXL



Blue Capitain 6751, M, FALKE Men's Wool-Tech Light M S/L SH Functional Yarn Quick Dry 1 Piece Base Layer Top

FALKE #ad - Light regular fit sleeveless sleeveless base layer top: 33231; available in sizes: S, XL, L, M, XXL. Stretchy sports singlet with temperature regulation keeping you warm in cold weather or cool in hot weather; keeps the body dry during sport thanks to the double layer structure; odour-neutralising effect; for trekking, hiking, walking, equestrian sports.

Special knitting techniques ensure a perfect fit and proportions; the seamless finish ensures the highest wearing comfort, unrestricted freedom of movement and prevents unpleasant pressure points, enabling you to achieve the best athletic performance. Model number for the falke men's wool tech. Sport thermals underwear without sleeves in a regular comfort fit; great combined with FALKE sport shorts, leggings, 3/4 or long sport tights; great shape and colour retention; this round neck underlayer top can be washed at 30°C on a wool cycle. Versatile thermal sleeveless sports top for men and teenage boys, to wear by itself or as a baselayer, in a soft breathable and thermo-regulating merino wool blend offering an ideal protection in warm or cold temperatures; for summer or winter.

Environment-friendly packaging without plastic hooks and unique falke quality since 1895 with a solid foundation of values: unconditional manufacturing and product quality as well as in all facets of the family business, the highest level of craftsmanship by our creative teams with inner variety and diversity as well as curiosity, a willingness to experiment, learn and the will to do the inevitable constructively overcoming resistance to innovation; we accompany you at every age with new ideas and modern products.
BrandFALKE #ad
ManufacturerFALKE KGaA #ad
Part Number33231

3. Thermowave


Thermowave Xtreme Merino Wool Base Layer Mens, - S, Thermo Shirts for Men Long Sleeve

Thermowave #ad - This long underwear mens top's snug fit design and extra long back keep you warm no matter what. Perfect choice for busy people who put the quality of their gear first. Made of supreme fabric, 20% polyamide, a mix of natural and man-made materials, this 220 gsm merino base layer mens midweight shirt with turtle neck and half-zip features: 80% Merino wool, 100% polyester inside.

The quality of your merino base layer shirt matters, just like the origin of the wool itself. Being one of the best, doesn't wear out easily, this mens merino base layer top is machine-washable, and is easy to take care of. Made to perform - ½ lockable zip & turtle neck. Premium merino wool shirt. Perfect fit. It's built to withstand a lot. The thermowave merino xtreme base layer wicking mens shirt is super soft and, thanks to flat seams - itch-free, suitable for sensitive skin.

Made in europe, thermowave merino Xtreme uses premium class Merino wool sourced from farms in New Zealand, the best wool we have tried. Next-level merino base layer. A quality long sleeve raglan base layer keeps you warm and dry, right? A good Merino outerwear feels great on you with a lockable half-zipper and extra long neck. Even more comfort.
BrandThermowave #ad
ManufacturerThermowave #ad

4. 32º DEGREES


S, 32 Degrees Men’s Heat Performance Thermal Heavyweight Baselayer Crewneck Long Sleeve Fleece Top, Stingray

32º DEGREES #ad - The thermal underwear can be worn as comfy loungewear on cold, 4-Way Stretch, Anti-Static, Heavyweight, Soft Fleece, Fitted, chilly nights. Wash care: wash cold gentle cycle with like colors, Tumble Dry Low, Non-Chlorine Bleach Only, Do Not Dry Clean, Iron Cool if needed.

Midweight fleece with a lot of stretch. Meant to be fitted to accommodate wearing under clothes. Fabric: 94% polyester, 6% spandex. Fitted: please refer to photo size chart for chest, hips, waist, and length measurements. Perfect for everyday comfort at home and winter outdoor activities. Offers full mobility and freedom of movement. Features: quick dry, tag free label. Soft micro-fleece on the outside, brushed for extra comfort on the inside.
Brand32º DEGREES #ad
Manufacturer32 Degrees #ad
Weight0.21 kg (0.46 Pounds)
Part Number#4302



MERIWOOL Mens Base Layer, 100% Merino Wool Midweight Long Sleeve Thermal Shirt Army Green

MERIWOOL #ad - Wicking & odor resistance: merino wool’s natural wicking and odor-resistant properties keep you dry and comfortable while active in cold weather. Through the process of wicking, Merino wool is the most breathable fabric and absorbs moisture better than any other fibers. Exceptional customer care: if your meriwool men’s crew top doesn’t perform to your satisfaction, return it to us within 30 DAYS along with proof of purchase for a hassle-free refund, or replacement.

Includes a 1-year limited manufacturer’s warranty, exchange,  which covers manufacturing and material defects. Easy care: mid-weight long sleeve crew top shirt is machine-washable on cold setting and safe to tumble dry on low heat, 250g/m2 weight interlock-knit Merino wool can be used as a base layer or mid-layer, so it’s ready when you are for your next adventure.

Package includes: 1 - men’s 250g/m² merino wool thermal crewneck top. Super soft: 100% all natural superfine 18. 5-micron merino wool ensures comfort all day – no itch! eaSY CARE: Mid-weight long sleeve crew top shirt is machine-washable and dryer-safe, so it’s ready when you are for your next adventure. Wicking refers to a fabric’s ability to pull moisture away from your body and keep you comfortable. Breathable: keeping you cool in summer and warm in winter, but won’t weigh you down. Men’s size options: XS to 3XL. Washer/dryer safe.
ManufacturerMERIWOOL #ad
Part NumberCrewneck



Mens Winter Warm Cotton Thermal Underwear Short Sleeve T Shirt Vest Large 41-43" Chest, Charcoal, HEAT HOLDERS

HEAT HOLDERS #ad - 2 colours - choose from Charcoal or White to wear underneath your clothes. Cotton rich - this cotton rich blend top feel super soft and comfortable no matter the layer. Thermal lining - this top has thermal lining to ensure you stay warmer for longer as it retains heat close to the skin. Longer body length - this thermal top has a longer body length so you can tuck it easily under your clothes. Ribbed construction - the ribbed construction of this thermal underwear has been designed so that it effortlessly shapes to the bodies natural contours.
Part NumberHHMTUSSLCHA-mpn

7. M-Tac


Green, Delta Level 2 Mens Top Thermal Underwear for Men Fleece Lined Compression Shirt, Medium

M-Tac #ad - Anatomical design: comfortable compression fit - standing collar with flat seams and 1/4 zip by YKK. Materials: made of waffle mesh fleece fabric 100% polyester - effectively warming, breathing and moisture wicking.

Odor control: provided by Silver ions fabric treatment, hypoallergenic - is less itchy and irritating than regular fleece or cotton underwear. Buy it now: long sleeve thermal shirt for extreme cold weather, can be used, as level 2 base layer. Perfect choise for camping, hunting, traveling and also for police, hicking, military, army, airsoft etc. Multipurpose: ultimate thermal retention for any outdoor – indoor activities.
BrandM-Tac #ad



32 DEGREES Men's 2-Pack Performance Lightweight Thermal Baselayer Crewneck Top, White/Charcoal Heather, Large

32 DEGREES #ad - Lightweight knit with a lot of stretch. The acrylic blend adds additional lightweight warmth that is comfortable against the body.

Features: lightweight, 4 way stretch, Anti Odor, Anti-Static, Moisture wicking, Tag Free Label. Fitted: please refer to photo size chart for chest, hiking, and length measurements. Perfect for running, skiing, hips, waist, hunting. Fabric: 40% polyester, 34% acrylic, 22% rayon, 4% spandex. Wash care: wash cold gentle cycle with like colors, Do Not Dry Clean, Tumble Dry Low, Non-Chlorine Bleach Only, Iron Cool if needed. Meant to be fitted to accommodate wearing under clothes.
Brand32 DEGREES #ad
Weight0.34 kg (0.75 Pounds)
Part Number#9002

9. Odlo


M, Odlo Men Functional Underwear Long Sleeve Shirt ACTIVE WARM ECO, odlo steel grey melange

Odlo #ad - Soft Touch. Outside or inside. Baselayer and more. Our functional clothing for active, passionate people is designed inside-out in Switzerland. Enhanced Moisture Management. For every weather. To balance the needs of everyday athletes and the planet, ODLO has a stated objective of using 100% sustainable fabrics by 2030 We use an industry-leading layering technology that we invented 75 years ago. Fast or slow. Keeps You Warm.
BrandOdlo #ad
ManufacturerOdlo #ad
Height9.1 cm (3.58 Inches)
Length19 cm (7.48 Inches)
Width12.5 cm (4.92 Inches)
Part Number159102

10. 32 Degrees


Black, 32 DEGREES Mens Heat Performance Thermal Baselayer Crewneck Long Sleeve Top, L

32 Degrees #ad - Features: moisture wicking, 4 Way Stretch, anti Odor, Anti Static, Tag Free Label. Meant to be fitted to accomdate wearing under clothes. Fabric: 40% polyester, 34% Acrylic, 22% rayon, 4% Spandex. Fitted: please refer to photo size chart for chest, waist, hips, and length measurements.
Brand32 Degrees #ad
Manufacturer32 Degrees #ad
Part Number#9002