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Heatwave Thermalwear

Heatwave® Pack Of 2 Women's Thermal Long Sleeve Top, Ladies Warm Winter Baselayer

Regular price £10.00 GBP
Regular price Sale price £10.00 GBP
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Women's Iconic thermal underwear range. Thermal wear which is warm, add a lightweight thermal layer to keep you warm and comfy. Cotton rich, extra breathability without heat loss. 0.45 tog rating- hold more warm air close to the skin. Thermal underwear base layers with a soft brushed inner made from an advanced insulating yarn giving them high performance insulation. Comfort fit, the ribbed construction shapes to the contours of the body. The tops are also side seam free for extra comfort.


White, marl grey and black


50% Polyester, 50% cotton


Machine washable at 40°C, can be tumble dried, wash dark colour's separately


We have partnered with 20 innovative grassroot companies that we believe can help reverse climate change. We allocate a fixed margin from every sale to support fund nature-based carbon removal solutions such as reforestation and soil carbon sequestration. Fund companies such as DroneSeed, Grassroots Carbon, and Pachama.

We are committed at Sock Stack to neutralize our shipping emissions and remove carbon dioxide from the atmosphere. Learn more here.

We also work closely with Royal Mail to ensure hassle-free, on-time delivery. Generally processing times are within 1 business day*. Processing times may also be extended during holidays, launches/re-stocks, limited edition releases and promotions. We will notify you as soon as your order ships or if we foresee any issues with fulfilling your order. Read our full Shipping Policy for more information.
*Please understand that business days do not include weekends and Bank Holidays (United Kingdom).

£3.95 flat fee for all domestic within the United Kingdom (free shipping over £40), 2-4 working days.
£5.95 express fee for all domestic within the United Kingdom, 1-3 working days.

Easy returns

Not completely satisfied with your purchase? Reach out within 35 days to explore hassle-free return options. We've simplified cancelations for a full refund and additionally return requests can be made from your online account. Please review our Refund Policy for more details. Thank you for your patience and understanding as we navigate this together.


Sock Stack does not have a call centre and we're not set up to handle high volumes of phone calls.

The Sock Stack brand was built online, including our customer support. Though you may receive an automated response every once in a while, all channels are manned by human staff who are eager to help you out, quickly and efficiently.

Thank you again for visiting Sock Stack. For information on our new product launches, please follow us on Instagram & Facebook. For customer service inquiries, please send us a message on Facebook Messenger or e-mail us at For order inquiries, please include your order number for faster service.


Clearpay makes budgeting easier, allowing you to break down your payments into four installments, due every two weeks, interest free. Head over to Sock Stack and find something you love. Then, just add to bag and simply select Clearpay as your payment method at the checkout. Enjoy your new stuff right away and pay over four installments.

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Buy now and pay 30 days later with KLARNA payment portal. You get all the “closure” of a full upfront payment, but with the cash-flow benefits of spreading the cost. The total amount charged to your card is no greater than if you simply paid for the entire purchase up front.



We are a young, bold homeware brand. We’re fun, we’re social and we’re an upcoming brand that doesn’t sleep. Interested in partnering? Apply today to be part of our community.

Sock Stack

Our Mission

Heatwave Thermalwear® envisions becoming the most celebrated, trustworthy, and sought-after brand by offering superior, distinctive, and inexpensive thermal wear products that exceed every customer's expectations. Heatwave Thermalwear's® vision is to become a leading thermal underwear baselayer brand by delivering the most refined and high-grade products to the customers that are thoughtfully developed to withstand extremely cold conditions while offering enhanced protection and unmatched comfort.

Sock Stack

Function, Fit & Style

Heatwave Thermalwear® strives to provide a diverse collection of the highest quality and affordable thermal underwear to men and women. Our thermal socks, long-sleeve base layers, long johns, hats and gloves are meticulously designed to be safe, lightweight, and breathable, providing fast-wicking and added warmth. As a customer-first brand, we are committed to fostering solid and lifelong relationships with our clients and aspire to deliver exceptional quality and value in our products.

Customer Reviews

Based on 17 reviews
Nicola Baker (Worthing, GB)
Thermal long sleeve top

Lovely warm thermal tops. Only reason for 4 star are the sleeves are a bit short

Angela Fenlon (Warlingham, GB)
Thermal tops

Loved them beautiful and warm really big fir the size

dawn linehan (Manchester, GB)
A little on the small side

The item is good quality especially for the price, however, they do come up a little on the small size so you may want to size up.

Denise Mcloughlin (Bellshill, GB)
5 star

Thermal top excellent deliveted when said great service.x

Avis Humphries (Great Yarmouth, GB)
Thermal long sleeved top

Hard to find vests like these on the high street, googled long sleeve vests and choose these. Wanted them for everyday wear about the house now I’m older and feel the cold more and they are warm and not bulky. Deducted one star because my size, 18, was not in stock. I agree with other review that they are very large so I shouldn’t have gone up a size but that was the only option at the time. Good quality and neat finishing

Paula Archer (Luton, GB)
Excellent quality

Fleece lined great quality pretty neckline, will be purchasing again soon

W.G. (Manchester, GB)

Nice items. I wish I'd bought a size smaller though which I never say!!!! The sleeves are rather long and it may have felt warmer the vests being more snug.

J.G. (Portsmouth, GB)
Toasty warm

I bought these thermal breathable tops and leggings foe a trip to Poland.
They were lovely and kept me really warm

Adam Ashbourne (West Bromwich, GB)
Thermol long sleeve

Excellent quality
Fast delivery
Great price.
That's all you want...

Claire A.
Good value

Good value, good quality pack. Nice mix of colours. Will definitely order more when the other packs are back in stock.