Best Polyester Thermal Bottoms for Men of 2025

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 Heat Stoke Thermal Long Johns are designed to keep you warm during the cold winter months. With a TOG rating of 0.45, these long johns effectively trap body heat, ensuring you stay comfortable. The brushed inside technology enhances cold resistance, providing extra warmth. Additionally, the ribbed construction fits your body perfectly, while the open fly design adds convenience. Made from a blend of 50% cotton and 50% polyester, these long johns are both soft and durable, making them an excellent choice for chilly days.

The SIMIYA Thermal Long Johns offer exceptional comfort with their fleece-lined interior, ensuring you stay warm throughout the day. The innovative free cutting design allows you to customise the length, providing a perfect fit for your needs. With double thickness knee fabrics, these long johns protect your knees from the cold, making them ideal for outdoor activities like hiking and skiing. Additionally, the 4-way stretch technology ensures you enjoy freedom of movement, whether at the gym or relaxing at home.

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 SIHOHAN Thermal Long Johns are designed for ultimate comfort and warmth during cold weather. The cut-to-fit bottom allows you to adjust the length for a perfect fit, ensuring no loose threads or discomfort. With double thickness knee fabrics, you can enjoy extra protection against the chill while engaging in outdoor activities like hiking or skiing. The fleece lining locks in heat, preventing cold air from penetrating, making these leggings an ideal choice for winter outings. Plus, the tagless design enhances comfort, eliminating irritation from tags.

The Orbix Thermal Trousers are designed for ultimate comfort and warmth. Made from a soft cotton and polyester blend, they ensure breathability, which helps to keep odours at bay. These thermal leggings also wick away moisture, helping you maintain a comfortable temperature throughout the day. With their highly flexible, stretchy fabric, you can move freely without feeling restricted, making them perfect for outdoor activities. Enjoy all-day warmth without the hassle of excess fabric, as they fit snugly like a second skin.

The Gaffer Thermal Bottoms are crafted from a premium blend of 50% polyester and 50% cotton, ensuring a stylish yet comfortable fit. The brushed cotton interior adds a layer of softness, making these long johns perfect for keeping warm during winter activities. As they are machine washable, you can easily maintain their cleanliness and freshness. Suitable for a range of outdoor activities, including travel, camping, and skiing, these trousers provide the versatility and warmth you need for any cold-weather adventure.

SIMIYA Thermal Long Johns are designed to keep you warm and comfortable during cold weather. The soft fleece lining and skin-friendly fabric trap body heat, ensuring your legs stay cosy without feeling bulky. If you're heading outdoors for a workout, the sweat-wicking technology helps keep moisture away from your skin, so you can stay dry and warm. The super elastic material allows for flexible movement, making them ideal for various activities, whether you're lounging at home or out in the winter chill.

The ZRWASKA Thermal Leggings are designed to keep you warm during winter. Available in various sizes and colours, these long johns fit comfortably and provide essential warmth with a TOG rating of 0.45. The cotton and polyester blend ensures moisture-wicking properties, making them ideal for winter loungewear or as an underlayer during outdoor activities. With their four-way stretch fabric, you can move freely while staying warm, perfect for skiing, hiking, or simply relaxing at home.

The BEGIANT Thermal Leggings are designed for ultimate comfort and warmth. Made from a blend of polyester and spandex, these leggings keep you cosy without the bulk of heavy clothing. The moisture-wicking properties ensure you stay dry, drawing sweat away from your skin, making them perfect for all-day wear. With high elasticity, they allow for freedom of movement during activities like skiing and cycling, providing essential support for your muscles and joints.