Skip to product information
1 of 6

Heatwave Thermalwear

Pack of 2 Womens Thermal Pants Advanced Insulating Yarn Cotton Rich Ribbed Comfort Fit for Running Hiking Workwear in White Grey Black by Heatwave Thermalwear

Regular price £8.33 GBP
Regular price Sale price £8.33 GBP
Sale Sold out
Tax included. Shipping calculated at checkout.
Carbon-neutral shipping with Shopify Planet
Carbon-neutral shipping on all orders
shipping emissions removed
That's like...
kilometers driven by an average gasoline-powered car
We fund innovations in...
Direct Air Capture
Bio Oil

Heatwave® Pack Of 2 Women's Thermal Pants Long Janes

Stay warm and comfortable this winter with the Heatwave® Pack Of 2 Women's Thermal Pants Long Janes. Designed for active outdoor enthusiasts, these thermal pants are perfect for running, hiking, sports, and workwear. Crafted to provide superior warmth and comfort, these thermal pants stand out in the market due to their unique features and benefits.

Key Feature 1: Advanced Insulating Yarn

Description: Our thermal pants feature an advanced insulating yarn that offers high-performance insulation. The soft brushed inner layer provides exceptional warmth by holding more warm air close to the skin without adding extra bulk.

Benefits: This feature ensures you stay warm during chilly weather, making it ideal for both outdoor activities and everyday wear. The advanced insulation technology keeps you comfortable without compromising breathability.

Key Feature 2: Cotton-Rich Material

Description: Made from 88% cotton and 12% polyester, these thermal pants offer extra breathability without heat loss. The cotton-rich fabric ensures maximum comfort while providing the necessary warmth.

Benefits: The material's breathability helps in regulating body temperature, preventing overheating, and ensuring a comfortable experience during prolonged wear.

Key Feature 3: Comfort Fit Ribbed Construction

Description: The ribbed construction of these thermal pants shapes to the contours of your body, providing a snug and comfortable fit. This design enhances mobility and ensures that the pants stay in place during any activity.

Benefits: The comfort fit ribbed construction adds to the overall comfort and functionality, making these thermal pants an excellent choice for various physical activities and daily wear.


Available in multiple sizes to ensure a perfect fit for every body type. Please refer to the sizing chart for precise measurements.

Colours Or Style Options

These thermal pants come in three stylish colours: White, Marl Grey, and Black. Choose the colour that suits your style and wardrobe.

Care Guide

Machine washable at 40°C. These thermal pants can be tumble dried. For best results, wash dark colours separately.

Why Choose This Product

Choose the Heatwave® Pack Of 2 Women's Thermal Pants Long Janes for unmatched warmth, comfort, and style. With advanced insulating yarn, cotton-rich material, and a comfort fit ribbed construction, these thermal pants are perfect for any active lifestyle. Trusted by users for their high performance and durability, these thermal pants offer excellent value for your money.

Additional Information

Usability: Perfect for running, hiking, sports, and workwear. These thermal pants are versatile and can be worn as a base layer or on their own.

Warranty and Support: We offer a satisfaction guarantee along with customer support. If you are not completely satisfied with your purchase, please contact us for a hassle-free return or exchange.


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.

Clearpay UK Shop Now How It Works Banner Informative Infographic


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 5 reviews
Marion Allen (Nottingham, GB)

Good quality


This is the second lot I ordered for my daughter been on holiday and they just arrived on the 12th December ordered on the 9th November i forgot i had ordered them apart from that they are worth the money and they keep her very warm under her trousers


Love them keep you nice and dry under your trousers

Muzaffar Usmanov (Eltham, GB)

Heatwave® Pack Of 2 Women's Thermal Pants Long Janes, Ladies Warm Winter Baselayer

Maxine Candlish (Gateshead, GB)
Worth the money

Arrived very quick keep you nice and warm