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  • 2 Pack Men's Plus Size Thermal Underwear Long Sleeve Tops Warm Durable Baselayer Insulated Brushed Yarn for Running Hiking Outdoor Sports Workwear Black 3XL to 6XL by Heatwave Thermalwear Thermal Underwear
  • 2 Pack Men's Plus Size Thermal Underwear Long Sleeve Tops Warm Durable Baselayer Insulated Brushed Yarn for Running Hiking Outdoor Sports Workwear Black 3XL to 6XL by Heatwave Thermalwear Thermal Underwear
  • 2 Pack Men's Plus Size Thermal Underwear Long Sleeve Tops Warm Durable Baselayer Insulated Brushed Yarn for Running Hiking Outdoor Sports Workwear Black 3XL to 6XL by Heatwave Thermalwear Thermal Underwear
  • 2 Pack Men's Plus Size Thermal Underwear Long Sleeve Tops Warm Durable Baselayer Insulated Brushed Yarn for Running Hiking Outdoor Sports Workwear Black 3XL to 6XL by Heatwave Thermalwear Thermal Underwear
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Heatwave Thermalwear

Heatwave Thermalwear Men's 2 Pack Thermal Long Sleeve Baselayer Top Black 3XL To 6XL Brushed Yarn Insulated Warm Ideal Base Layer For Running Hiking

£13.00 GBP
£13.00 GBP
Sale Sold out
Tax included. Shipping calculated at checkout.
Size
Colour

🎯 Introduction

When the cold bites, you need a base layer that works as hard as you do — genuinely warm, genuinely comfortable, and invisible under everything you wear.

Trusted by thousands of happy Heatwave Thermalwear customers — quality you can feel from the moment it arrives.

👤 Who Is This For?

This thermal set is perfect for you if you:

  • Get cold easily and need reliable warmth from your very first layer
  • Ski, snowboard, hike, or spend time outdoors during winter
  • Want a thermal comfortable enough to wear under everyday clothes all day long
  • Are looking for a thoughtful, practical gift for someone who loves the outdoors

✨ Key Feature 1: Dual Functionality

Description: The Heatwave® thermal top can be worn as an independent outfit or as a base layer. Its design ensures it fits seamlessly under other clothing without adding bulk.

Benefits: This feature provides flexibility in how you wear the top, making it suitable for various occasions. Whether you're heading to the gym or out for a casual day, this top adapts to your needs.

💡 Key Feature 2: Moisture-Wicking Fabric

Description: Crafted from a blend of 50% cotton and 50% polyester, this top offers excellent moisture-wicking properties, keeping you dry even during intense physical activities or in wet conditions.

Benefits: Stay comfortable and dry throughout the day, regardless of the weather or your activity level. The moisture-wicking fabric ensures you remain fresh and comfortable.

🔍 Key Feature 3: Superior Warmth and Breathability

Description: The Heatwave® thermal top provides superior warmth without compromising on breathability. The fabric combination ensures you stay warm in cold weather while allowing your skin to breathe.

Benefits: Enjoy the perfect balance of warmth and breathability, making this top ideal for cold weather. Whether you're indoors or outdoors, you'll stay comfortable and cozy.

📐 Sizes

  • 3XL: 50-52 inches
  • 4XL: 53-55 inches
  • 5XL: 56-58 inches
  • 6XL: 59-61 inches

🎨 Colours or Style Options

The Heatwave® thermal top is available in classic black, ensuring it matches seamlessly with any outfit.

🎁 Gifting & Occasions

A genuinely thoughtful, practical gift for cold-weather lovers:

  • Perfect Christmas gift for outdoor enthusiasts, hikers, and skiers
  • A thoughtful birthday treat for them who feels the cold
  • Great Secret Santa present — practical, comfortable, always appreciated
  • Ideal self-care gift for anyone who spends time outdoors in winter

🧺 Care Guide

These items are machine washable. Please follow the care instructions on the packaging to maintain their quality and longevity.

❓ FAQ

  • Is this warm enough for skiing or outdoor sports? Yes — the insulating yarn and brushed interior are engineered for cold-weather performance as a base layer for skiing, snowboarding, and hiking.
  • Can I wear this under everyday clothes? Absolutely. The slim ribbed fit layers smoothly under jeans, trousers, or work attire without adding visible bulk.
  • Is it suitable for sensitive skin? Yes — the hypoallergenic fibres are gentle and non-irritating for comfortable all-day wear.
  • What sizes are available? Please refer to the Sizes section above for the full range. If you're between sizes, we recommend sizing up for the most comfortable layering fit.
  • Is it machine washable? Yes — machine wash at 40°C. Easy to care for, wash after wash.

🏆 Why Choose This Product?

Choose the Heatwave® Plus Size Men's Thermal Long Sleeve Top for its unique blend of comfort, functionality, and style. Unlike other thermal tops, this product offers superior warmth and breathability, ensuring you stay dry and comfortable. Trusted by users for its quality and durability, it’s the perfect addition to your winter wardrobe.

"Surprisingly warm and really comfortable. Wear these under everything in winter — brilliant quality."

📦 Additional Information

Usability: Wear this thermal top as a standalone outfit or layer it under your clothes for added warmth. Ideal for a variety of activities, from outdoor sports to everyday wear.

Warranty and Support: The Heatwave® thermal top comes with a satisfaction guarantee. If you are not completely satisfied, please contact our customer support for returns or exchanges.

🛒 Add to Basket

Stop dreading the cold and start enjoying it. Tap Add to Basket and feel the difference from your very first wear. ❄️

Shipping

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 £22), 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.

Contact

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 sockstack@outlook.com. For order inquiries, please include your order number for faster service.

Clearpay

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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Klarna

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.

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Influencers

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.

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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.

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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.