Best Thermal Sets for Men of 2026

The Heatwave Thermal Long Sleeve is designed to keep you warm by holding more heat close to your skin, thanks to its 0.45 TOG rating. Made from a comfortable blend of 60% cotton and 40% polyester, it offers a soft feel and durability. The ribbed construction ensures a snug fit that shapes to your body contours, providing both comfort and warmth. This pack of two long sleeve tops is an ideal baselayer for colder days, helping you stay cosy and comfortable throughout.

The UNIQUEBELLA Thermal Underwear Set provides exceptional warmth with its high-quality fleece lining, ensuring you stay cosy during cold autumn and winter days. Its breathable and moisture-wicking fabric keeps sweat away, allowing you to dry quickly and stay fresh. The stretchable material offers maximum freedom of movement, protecting you from muscle strain during activities. With a snug fit, this set is designed to retain warmth without feeling bulky, making it ideal for various outdoor exercises and daily wear.

The UNIQUEBELLA Thermal Underwear Set is designed to keep you warm and comfortable during winter activities. Made from thermal material, it ensures you stay cosy while skiing, snowboarding, or hiking. Its breathable function allows air circulation, preventing overheating, so you can enjoy activities like cycling and running without discomfort. This multifunctional set includes both top and bottom pieces, perfect for layering under your clothing for added warmth when heading outdoors.

The Heatwave Thermal T Shirt is a practical choice for anyone looking to stay warm. With a 0.45 TOG rating, it effectively traps warm air close to your skin, ensuring you remain cosy during colder months. The comfort fit and ribbed construction allow the shirt to shape perfectly to your body, providing enhanced comfort throughout the day. Available in multiple colours, these thermal t-shirts are ideal as a baselayer or for relaxing at home.

The ZRWASKA Thermal Set offers a comfortable and warm experience with its 0.45 TOG rating, ensuring that you stay cosy in chilly weather. Made from a blend of 50% cotton and 50% polyester, it effectively retains warmth while wicking moisture away from your skin. This full set includes a long-sleeve top and long johns, making it ideal for use as loungewear, sleepwear, or an extra layer beneath your everyday clothes. With various sizes and colours available, you can easily find the perfect fit for your needs.

The CL convallaria Thermal Set is designed to keep you warm and comfortable during cold weather. Made from a soft blend of 90% polyester and 10% spandex, this underwear reduces pilling and shrinking, ensuring a snug fit without tags for added comfort. The unique moisture-wicking fibres help to keep you dry by drawing away sweat, so you won't feel sticky or clammy. With a 4-way stretch design, you can move freely, making stretching or squatting more comfortable. Plus, the high-quality stitching ensures durability even after multiple washes.