Best Breathable Thermal Bottoms for Men of 2025

The Talus Thermal Trousers from Mountain Warehouse are designed to keep you warm without the bulk. Their Isotherm technology features densely packed fibres that retain heat, making them perfect for chilly outdoor activities. Moisture wicking ensures that sweat is drawn away from your body, keeping you dry and comfortable. Additionally, these trousers dry quickly, allowing you to wash them easily or wear them during holiday adventures without worry. Lightweight and easy to pack, they are ideal for active use, making them a great choice for camping and hiking.

The Mountain Warehouse Thermal Trousers are designed to keep you warm and comfortable. Made from high-quality Merino wool, these trousers have natural antibacterial properties, ensuring you stay fresh during your outdoor activities. They actively wick moisture away from your body, helping you feel dry and comfortable even during intense exercise. Additionally, the quick-dry feature allows the fabric to dry rapidly, making them perfect for camping or hiking trips. With these trousers, you can enjoy your adventures without worrying about discomfort.

The Talus Thermal Trousers by Mountain Warehouse are designed for outdoor enthusiasts. Featuring Isotherm technology, these trousers trap warmth without the bulk, keeping you cosy during chilly hikes or camping trips. The moisture-wicking fabric actively pulls sweat away from your skin, ensuring you stay dry and comfortable. Additionally, they dry quickly, making them perfect for holiday adventures or washing after a long day in nature. Lightweight and easy to pack, these trousers offer convenience for any active lifestyle.

The DOLCE ENVY Thermal Trousers are designed to keep you warm and comfortable during winter. Made from a blend of 50% cotton and 50% polyester, these trousers feature heat preservation technology that helps reduce heat loss while remaining lightweight. The breathable materials ensure optimal temperature regulation, making them perfect for various activities. Additionally, the fabric absorbs sweat quickly, keeping you dry and free from unpleasant odours, which is especially beneficial during exercise.

The AMhomely Thermal Leggings are designed for comfort and style, making them a great addition to your winter wardrobe. They are perfect for layering, keeping you warm during the colder months. The breathable fabric ensures you stay comfortable, no matter the activity. With their high-waisted design, these leggings provide extra support and a flattering fit. Whether you are lounging at home or heading out, these leggings will serve as a versatile and stylish choice.

The Risalti Thermal Bottoms are designed for ultimate comfort and warmth. Made from soft stretch microfibre, they wick away perspiration, keeping your skin dry and warm during activities. These leggings are perfect for outdoor sports, allowing you to wear them as a first layer in temperatures from +5° to +20°. Their excellent thermal protection ensures you stay comfortable even in cold, windy conditions, making them an essential for any winter adventure.

The HIPOWER Thermal Long Johns are designed to keep you warm during the chilly winter months. Made from ultra-soft micro-fleece fabric, they fit snugly to minimise heat loss while remaining lightweight. The advanced 4-way stretch allows for excellent comfort and movement, making them perfect for activities like running or yoga. Additionally, their moisture-wicking properties ensure you stay dry by quickly drawing sweat away from your skin, providing you with a sense of security in cold weather.

The Panzy Thermal Bottoms offer ultimate warmth with a 0.45 TOG rating, perfect for keeping you cosy in freezing conditions. The elastic comfort fit ensures they stay snugly in place, allowing you to move freely whether you’re hiking or relaxing at home. With a functional fly/pee hole, you'll enjoy added convenience without compromising on style. Plus, the 4-way stretch fabric adapts to your movements, providing both flexibility and durability for any winter activity.

The HOMEBABY Thermal Long Johns set is designed to keep you warm during the chilly months. This set features a long sleeve top and thermal bottoms, making it perfect for outdoor activities like skiing, camping, and cycling. The breathable cotton material ensures comfort and allows for easy movement. You will appreciate the lightweight design that provides warmth without bulk, making it ideal for layering. Additionally, the quick-dry feature helps keep you dry during your adventures.

The SIHOHAN Thermal Bottoms are designed to keep you warm and comfortable in cold weather. With a fleece lining, these bottoms allow your skin to breathe while providing warmth. The elastic waistband prevents slipping, ensuring a secure fit. The ribbed foot design effectively blocks out cold air, enhancing your comfort. Additionally, the fly hole design offers convenience, allowing you to attend to your needs quickly. Whether worn as thermal pants or lounge wear, these bottoms are a practical choice for winter wear.