Shop By Category
Subscribe
More Options
7
Refined results
Refine
7
Refined resultsThermal Underwear Deals
NOW
£ 13.99
£ 38.99
Men's Seamless Thermal Vest 2-Pack - Lightweight Stretch Base Layer Underwear
8 bought
NOW
£ 5.99
£ 19.98
4 Pack Thermal Fleece Lined Socks
507 bought
NOW
£ 6.99
£ 14.99
12 Pack England Flag Unisex Thermal Socks - Black or White
91 bought
NOW
£ 7.99
Men's Ultra-Warm Thermal Boot Socks
3 bought
NOW
£ 9.99
£ 24.99
Rechargeable Cotton Thermal Heated Crew Socks - Unisex, Breathable, Stretch Fit
525 bought
NOW
£ 4.99
£ 9.99
3 Pairs of Men's Thermal Insulated Socks in Black or Grey
90 bought
NOW
£ 14.99
£ 44.99
V Cut Faux Shearling Non-Slip Thermal Slipper Socks - Plush Indoor Winter Grip Socks
NOW
£ 6.99
£ 34.99
2-Pack Traceless Breathable Cotton Underwear Pads - No-Show, Anti-Awkward Liner
NOW
£ 6.99
£ 19.99
7 Piece Women's Disposable Underwear Pack - 5 Sizes
2 bought
NOW
£ 4.99
£ 15.99
Women's Ice Silk Seamless Safety Shorts - Breathable, Anti-Chafe Underwear (2 Sizes, 3 Colours)
2 bought
NOW
£ 14.99
£ 39.99
Men's Pure Cotton Seamless Breathable Boxer Briefs - 4 Pack Multipack Underwear
42 bought
NOW
£ 29.99
£ 55.00
PRICE DROP! Calvin Klein Women's 3 Piece Underwear Set - Bralette, Thong & Briefs Included
359 bought
NOW
£ 4.99
£ 11.99
Novelty Eating Animal Socks - Fun & Quirky Designs!
249 bought
NOW
£ 8.46
£ 19.99
10PCS, 20PCS Men's Sports Socks Basketball Socks
- Age group: Adult
- Brand: EPETLO RECRUITS LTD / Coolfordeal
- Location: National Deal
6 bought
NOW
£ 3.99
£ 12.00
Plantar Compression Ankle Socks - Supportive & Breathable
393 bought
NOW
£ 7.99
£ 20.99
Unisex Sushi Roll Socks Box Set - 3, 4 or 5 Pairs!
6471 bought
NOW
£ 4.99
£ 15.45
Non-Binding Diabetic Socks - Comfort & Relief in 3 Colours
69 bought
NOW
£ 4.99
£ 19.99
Moisturising Fuzzy Sleep Socks with Built-In Hydrating Gel
78 bought
NOW
£ 12.99
£ 69.99
5-Piece Women's Mid-Waist Menstrual Panty Set
47 bought
NOW
£ 24.99
£ 44.00
Calvin Klein 3 Pack Boxers Set!
19360 bought
NOW
£ 6.99
£ 13.98
Self-Heating Knee High Socks - Energy Saving, Breathable, Universal Fit
635 bought
NOW
£ 8.99
£ 38.99
3 Pairs Breathable Sports Mid-Calf Socks Knee High Boot Sock
- Age group: Adult
- Gender: Unisex
- Location: National Deal
NOW
£ 7.99
£ 12.99
3 Pairs of Bamboo Socks Set for Men - 4 Colours
8 bought
NOW
£ 8.99
£ 19.99
Women's Invisible Push Up Bra - 3 Sizes & 2 Colours
8 bought
NOW
£ 12.99
£ 39.99
24 Days Christmas Sock Advent Calendar - 0.54p Per Pair!
55 bought
NOW
£ 9.99
£ 29.99
Designer Inspired Bear Socks - One Size Fits All
80 bought
NOW
£ 19.99
£ 59.99
5 Pairs of Toeless Yoga Socks with Grips
NOW
£ 22.99
£ 54.00
Rechargeable Heated Socks Featuring Battery Pack
7 bought
NOW
£ 6.99
£ 19.99
Men's Performance Athletic Crew Socks - 4 Colour Options
83 bought
NOW
£ 3.99
£ 9.99
Non-Slip Yoga Grip Pilates Socks - Breathable & Anti-Slip
39 bought
NOW
£ 8.99
£ 14.99
Women's Wool-Blend Thick Socks - 5 Pairs!
59 bought
NOW
£ 3.00
£ 6.99
Grinch Polyester Crew Socks - Festive, Breathable, Multi-Pack, UK Size 6-10
232 bought
NOW
£ 6.99
£ 19.99
PRICE DROP! 3-Pack of Nike Ankle Socks - UK Sizes 8-11!
500 bought
NOW
£ 8.99
£ 19.99
Classic Men's 3pk Ankle Socks - Soft Cotton Blend Trainer Socks
7 bought
NOW
£ 12.99
£ 38.99
1 Pair Grinch-Inspired Polyester Christmas Crew Socks - Soft, Breathable, Festive
NOW
£ 7.99
£ 19.99
Men's IceMesh Soft Breathable Boxers - Comfort & Style in 4 Colours
91 bought
NOW
£ 8.99
£ 29.99
Sherpa Fuzzy Slipper Socks - 7 Colours!
66 bought
NOW
£ 7.99
£ 27.99
2-Pack Men's Shapewear Vests - Breathable & Elastic Comfort
811 bought
NOW
£ 7.99
£ 19.99
Cute Fast Food Crew Socks Set - Playful Comfort for All Seasons
6 bought
NOW
£ 19.99
£ 37.99
Hugo Boss Christmas Socks & Hip Flask Gift Set - For Him!
167 bought
NOW
£ 2.99
Floral Lace Ankle Socks - Delicate Summer Elegance
12 bought
NOW
£ 24.99
£ 44.00
PRICE DROP! Hugo Boss Men's 3 Pack Boxer Shorts!
2386 bought
NOW
£ 7.99
£ 14.99
Pack of 3 Nike Lightweight Crew Socks - Size UK 8-11
12344 bought
NOW
£ 3.99
£ 9.99
'Bring Me Some' Men's Novelty Socks - Quirky & Comfortable
16 bought
NOW
£ 9.99
£ 29.99
Stranger Things Inspired Low Cut Socks - 2-Pairs
6 bought
NOW
£ 8.99
£ 19.99
3 Pairs Cotton Novelty Burger Crew Socks Gift Set - Fun Multi-Pack for Men & Women
606 bought
NOW
£ 9.99
£ 25.99
Fluffy Non-Slip Fleece Crew Socks - Warm Indoor Grip, Polyester Blend, UK 3-8
3 bought
NOW
£ 2.99
Cotton Crew Socks for Dad - 3-Pack, Breathable, Gift-Ready, Size 7-11
13 bought
NOW
£ 6.99
£ 19.99
Women's Acrylic Winter Slipper Socks - 7 Colours, Cosy Indoor Crew
21 bought
NOW
£ 14.99
£ 29.99
PRICE DROP! Emporio Armani Cotton Crew Socks 3-Pack - Breathable, Logo, UK 5-12 (Black or White)
573 bought
NOW
£ 8.99
£ 19.99
3-Pack Nike Cotton Ankle Trainer Socks - Breathable Low Cut, Multi-Colour, Machine Washable
21 bought
NOW
£ 13.99
£ 41.99
5 Pairs Women's Polyester Cartoon Kitty Crew Socks - Soft, Breathable, Everyday Comfort Multi-Pack
NOW
£ 12.99
£ 38.99
Kids Cotton Crew Socks - Breathable, Stretch Fit, 2-Pack Cartoon Styles
NOW
£ 8.99
£ 29.99
Cotton Donut Print Crew Socks - Breathable, Fun, One Size Multi-Pack
1 bought
NOW
£ 9.99
Men's Silicone Sole Non-Slip Sports Socks - Pack of 4
30 bought
NOW
£ 3.99
£ 9.99
Cotton Glow in the Dark Gaming Socks - Crew, Short & Middle Tube, 1 or 3 Pack
38 bought
Transform your winter wardrobe with our exclusive selection of Thermal Underwear Deals. At Wowcher UK, we know that staying warm shouldn’t come at the cost of comfort or movement, which is why our range blends performance fabrics with unbeatable prices.
Imagine starting a frosty day with base layers that wick away sweat, trap heat, and stay comfortable under jackets, without the bulk of heavy clothing. From merino wool to technical synthetics, our deals cover a wide spectrum of options for men, women, and unisex fits.
Unbeatable Deals on Thermal Underwear
Shop curated reductions on thermals, base layer tops, long johns, and fleece-lined thermal bottoms designed to trap warmth without bulk. Whether you’re planning for winter sports, daily commutes, or outdoor work, Wowcher UK brings you the best prices on trusted brands and value-packed sets.
Our selection includes merino wool thermal underwear, synthetic thermal tops and bottoms, and hybrid fleece-lined options that deliver warmth, breathability, and durability. With flexible sizes and clear sizing charts, you can find the perfect fit without the guesswork.
What to Consider When Buying Thermal Underwear?
First, consider the activity. For high-intensity outdoor pursuits, prioritise moisture-wicking and quick-dry fabrics that pull sweat away from the skin. For very cold environments, look for higher warmth ratings and layered options such as fleece-lined bottoms or thermal tops.
Fabric matters. Merino wool offers natural warmth, odour resistance, and comfort in varying temperatures, while synthetic blends (polyester, elastane) provide superior stretch, durability, and quick drying. A blend that suits your climate and activity can give you the best balance between warmth and mobility.
Fit and layering are key. Look for a snug, but not constricting, fit that allows easy layering under outerwear. Flatlock seams reduce chafing, and raglan sleeves improve mobility in active wear. Don’t forget to check care instructions to keep fabrics performing wash after wash.
What Are the Most Popular Types of Thermal Underwear?
Merino wool thermals top the list for temperature regulation and odour control, perfect for multi-day adventures or all-day wear in chilly offices. Synthetic base layers, including polypropylene and polyester blends, excel in moisture management and fast drying for workouts and sports like running, cycling, or skiing. Fleece-lined options add extra warmth for extreme cold, while seamless designs reduce bulk under tight outer layers.
Sets that include both a thermal top and bottoms provide a cohesive look and balanced insulation. For winter enthusiasts, consider wind-resistant or brushed interior fabrics that boost warmth without sacrificing breathability.
How to Maintain Thermal Underwear?
Always follow the care label. Generally, wash in cool or warm water with a gentle cycle and use a mild detergent to protect fibres. Avoid fabric softeners that can reduce moisture-wicking performance. Air-drying or tumble-drying on a low setting helps preserve elasticity and fit. Do not iron thermo fabrics that contain synthetic fibres, as heat can degrade performance.
Store clean and dry to prevent mildew or odour build-up. Regular care will extend the life of your thermals, keeping them light, airy, and ready for the coldest days. With Wowcher UK, you’ll find detailed care tips in the product descriptions to maximise longevity.
What Are the Differences Between Men’s and Women’s Thermal Underwear?
Men’s thermals often feature ribbed, straight cut designs for generous movement across the hips and thighs, with sizing that accommodates typically broader shoulders. Women’s thermals may offer contoured fits at the waist and hips, with flatter seams and softer textures to suit female silhouettes. Both sexes can benefit from flatlock seams to reduce chafing, but gender-specific cuts ensure a more comfortable fit under activewear and outer layers.
Choose according to your body shape, activity type, and layering preference. Many Wowcher UK deals cover unisex options as well, offering versatile fits suitable for a wide range of outdoor activities.
Are Thermal Underwear Sets Worth It?
Yes, especially in cold climates or for people who spend long periods outdoors. Sets simplify layering, ensure even warmth, and reduce the chance of gaps where cold air can penetrate. Bundled sets from Wowcher UK often offer better value than purchasing tops and bottoms separately, and you’ll find options across materials, from breathable merino to high-performance synthetics.
If you’re active, invest in a moisture-wicking base layer plus a fleece-lined secondary layer for extremely cold days. For casual winter comfort, a lightweight merino top with a matching bottom can be all you need for daily errands and commutes.
How Do I Choose the Right Size?
Refer to the brand’s sizing chart on Wowcher UK. If you’re between sizes, consider your layering needs: a snug base layer performs best when it fits close to the skin, while you may want a slightly looser fit if you plan to wear extra insulating layers underneath. Check customer reviews for hints on whether a particular fabric runs small or large and note the stretch level of the fabric.
When in doubt, opt for a closer fit in the top to maximise moisture management and warmth. For bottoms, a secure but comfortable waist and leg length are essential for full-range movement during activities like skiing or running.
Where Can I Find the Best Thermal Underwear Deals?
Wowcher UK curates frequent promotions on thermal underwear deals, including seasonal sales, bundle discounts, and exclusive offers from trusted outdoor brands. Bookmark pages with your favourite materials, merino wool thermals, synthetic base layers, and fleece-lined thermals, to snap up the best prices when they drop.
Sign up for Wowcher UK alerts to receive early access to limited-time offers and new product drops. Our filters make it easy to compare warmth levels, fabric types, and price points, helping you find the ideal thermals for your winter routine.