Best Wool Thermal Bottoms for Men of 2025

The DANISH ENDURANCE Thermal Long Johns for men are designed for optimal warmth and durability. Made from a midweight blend of antibacterial merino wool and polyamide, they effectively regulate temperature and wick moisture, ensuring you stay dry during outdoor activities. You can choose between styles with or without a fly, adding comfort to your experience. The soft, superfine 18.5-micron fibres are gentle on your skin, while the flat seams and absence of tags prevent irritation.

The Merino.tech Thermal Bottoms are crafted from midweight 100% superfine Merino wool, offering exceptional comfort without the itch. This natural fabric wicks moisture away, ensuring you stay dry and fresh throughout the day. Additionally, its odour-resistant properties help maintain a pleasant feel, even after extended wear. Easy to care for, these thermal bottoms are washer and dryer safe, making them a convenient choice for daily use. Enjoy the benefits of temperature regulation, keeping you comfortable all year round.

The LAPASA Merino Wool Long Johns provide the perfect combination of warmth and breathability. Made from 100% natural Australian merino wool, these thermal bottoms keep you comfortable in any season, ensuring you stay cool in the heat and warm in the cold. The extra soft fabric feels supple against your skin, eliminating any itchiness. With a durable 4-way stretch ribbed hem, you can enjoy flexibility and long-lasting wear, making them ideal for outdoor activities like hiking and skiing.

The woolcano Thermal Leggings are designed for ultimate warmth, crafted from 100% Merino wool that traps body heat, keeping you cosy even in the coldest weather. Their breathable fabric wicks moisture away, ensuring you remain dry and comfortable during any activity, whether skiing or running. The luxurious softness of Merino wool provides a snug yet comfortable fit, allowing for all-day wear without irritation. Versatile for various winter sports, these leggings can be worn as a base layer under your ski gear or for casual outings.

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 Helly Hansen Merino Base Layer offers a unique 2-in-1 design, combining a 100% merino wool exterior with LIFA stay warm technology inside. This midweight base layer is perfect for any cold weather activity, ensuring you stay warm and comfortable. With its two-layer construction, you benefit from the soft, non-itch properties of merino wool alongside the technical advantages of LIFA fibres. The flat lock seams enhance comfort, making these pants an excellent choice for outdoor enthusiasts.

The Smartwool Merino 250 Bottoms are crafted from 100% merino wool, providing exceptional comfort and breathability. The interlock knit enhances thermoregulation, helping you stay warm without overheating. You will also appreciate the odour resistance, which keeps you feeling fresh during your activities. The updated fit not only improves functionality but also adds a touch of style, making these bottoms suitable for various occasions.

The Icebreaker Merino Wool Leggings offer exceptional comfort and fit, thanks to their updated design. Made from 100% Merino wool, these leggings provide warmth while remaining breathable, ideal for workouts and sports. The stretchy rib fabric moves effortlessly with you, ensuring ease of movement during any activity. Additionally, their natural odour resistance means you can wear them for longer without worrying about unpleasant smells, making them a practical choice for your gym sessions.

The SHEEP RUN Merino Thermal Pants are crafted from 100% superfine Merino wool, making them perfect for your daily activities. The moisture management feature ensures that even during intense workouts, you remain dry as the fabric moves moisture away from your skin. You can enjoy breathability without the worry of odour, allowing you to stay fresh while hiking, running, or cycling. Additionally, these thermal bottoms are suitable for both indoor and outdoor wear, naturally adapting to your body temperature for optimal comfort throughout the day.

The Icebreaker Everyday Leggings offer a second skin fit, making them ideal for layering and providing warmth during cold weather. Made from 100% Merino wool, these leggings are naturally odour-resistant and regulate your temperature, keeping you warm when it’s cold and cool when it’s warm. The contoured, slim fit ensures comfort whether you’re camping in summer or embarking on a winter adventure. Designed with ribbed fabric and a gusset for mobility, these thermal leggings enhance your freedom of movement while managing moisture effectively.