Thermal underwear and base layers
How to Choose the Best Thermal and Technical Base Layer?
Visit Glisshop and browse our selection of long-sleeve tops and tights designed to provide maximum warmth. With their snug fit, these thermal base layers act like second skins, quickly forgotten yet delivering exceptional comfort and warmth. Whether you prefer merino wool or synthetic fibres, the choice is yours. Our men’s thermal base layers and women’s thermal base layers are the perfect first layer of protection. Just add a fleece and a technical jacket to be ready for winter.
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Clearance
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Recommended price
£58.50
-29%
£40.95
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- S
- L
- XL
Clearance
-
Recommended price
£67.50
-40%
£40.50
The Craft Adv Warm Intensity Ls Slate Amber is a comfortable, stretchy technical undergarment designed for optimal thermoregulation and freedom of movement.
- S
- L
Clearance
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Recommended price
£58.50
-29%
£40.95
The Falke Longsleeved Shirt Black technical underwear, with its slim fit and recycled materials, optimizes moisture regulation and ensures comfort and freedom of movement.
- S
- M
- XL
Clearance
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Recommended price
£49.41
-35%
£31.95
Superdry's Base Layer Legging Black, made from recycled materials, provides comfort, support and moisture wicking for sports activities.
- S
- M
- XL
Clearance
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Recommended price
£67.50
-49%
£33.75
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- XS
- S
- L
Clearance
-
Recommended price
£67.50
-49%
£33.75
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- S
- M
- L
Clearance
-
Recommended price
£58.50
-50%
£29.25
- XS
- S
Clearance
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Recommended price
£26.91
-50%
£13.41
The DARE2B In The Zone II 3/4 Bottoms Black are innovative, ergonomic sports leggings with SeamSmart technology, soft-touch fabric, quick-drying, and anti-bacterial odour control.
- S
- L
Clearance
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Recommended price
£44.01
-30%
£30.81
The Uyn Man Motyon Biotech Boxer Black Beauty, designed with COOLTH_SL bio-fiber, offers maximum functionality and absolute freedom of movement during your sporting activities.
- S-M
- L-XL
Clearance
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Recommended price
£67.50
-49%
£33.75
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- XS
- S
Clearance
-
Recommended price
£98.91
-24%
£74.25
- L
- XL
-
Recommended price
£40.41
-35%
£26.01
The La Sportiva Sunfire T-Shirt M is a lightweight, breathable, and eco-friendly base layer with efficient moisture-wicking, quick-drying, and odour-reducing features.
- S
- XL
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Recommended price
£53.91
-35%
£35.01
- S
- L
-
Recommended price
£24.21
-40%
£14.31
DARE2B's Don't Sweat It II bra offers lightweight support, seamless comfort and long-lasting freshness thanks to its advanced technologies.
- L
-
Recommended price
£24.21
-40%
£14.31
DARE2B's Don't Sweat It II Element Grey bra offers lightweight support, seamless comfort and long-lasting freshness thanks to its advanced technologies.
- L
-
Recommended price
£24.21
-40%
£14.31
The Don't Sweat It II Moonlight Denim bra from DARE2B offers lightweight support, seamless comfort and long-lasting freshness thanks to its innovative technologies.
- L
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Thermal Base Layer Buyer’s Guide
The thermal base layer is the first element of a skier’s or snowboarder’s gear. Acting as a warm and discreet second skin, it ensures all-day comfort. Long-sleeve tops and tights protect you from head to toe—simply layer on a fleece and a technical winter jacket to be perfectly prepared.
There’s a wide range of synthetic and natural materials tailored to all types of sports. Every year, manufacturers compete to develop innovative thermal base layers designed for both skiing and mountain hiking. At Glisshop, you’ll find a full range of thermal base layers and hiking apparel to complete your outfit and enjoy optimal warmth.
Key Features of Cold-Weather Base Layers
Though seemingly minor, the thermal base layer plays a crucial role. It regulates your body temperature and wicks sweat away during activity, ensuring you stay warm even after physical exertion. The textiles used are soft for direct skin contact and highly breathable to promote evaporation. Ideally, the thermal layer should remain dry or dry quickly. To achieve this, major outdoor brands from Chamonix, the U.S., and Nordic countries use advanced synthetic fibres or premium merino wool. For absolute comfort and maximum warmth, choose models with flat, ergonomic seams that won’t cause irritation, even with repeated friction—pure bliss!
Getting the Most Out of Your Men’s or Women’s Base Layer
If you’ve chosen a long-sleeve t-shirt, synthetic tights, or long johns, remember to wash them regularly to prevent odours. As for merino wool garments, they can be machine washed at the end of the week, provided the temperature doesn’t exceed 30°C, and spin cycles are kept gentle. Get the most of your ski season with Glisshop by completing your ski outfit with quality garments from brands like Adidas, Bjorn Daehlie, Bula, Craft, Eivy, Falke, Gore, Icepeak, Kari Traa, Maloja, Odlo, Patagonia, Picture Organic Clothing, Protest, Rossignol, Superdry, and Swix!
What Is the Best Thermal Base Layer: Synthetic Fibre or Merino Wool?
Synthetic fabrics are often lighter than their wool counterparts. They offer comparable breathability and are more affordable. However, while they dry very quickly, they tend to develop unpleasant odours quickly due to perspiration.
Merino wool, known for its softness, has excellent moisture absorption and also dries quickly. Another key advantage is its natural antibacterial property, which prevents the development of bad odours caused by sweat. This makes it an ideal choice for reducing the number of garments needed and wearing the same item for multiple days, particularly useful for trekking. If you’d like to learn more about this material, we invite you to check out our Merino wool guide, where we discuss its advantages and disadvantages in detail.