Men's Underwear

It might not be the most glamorous part of your kit, but when you're hiking all day, scrambling over ridgelines, or spending a week in a tent, good underwear makes a world of difference. Our range of men's underwear is built for the outdoors—designed to keep you comfortable, supported, and fresh on every adventure.

We stock performance-first brands like SAXX men's underwear, known for their ergonomic fit, soft fabrics, and next-level comfort where it counts. Rab underwear and Montane men's underwear are also part of the lineup—technical base layers that work hard under pressure, moving sweat, minimising chafe, and staying put no matter how active your day gets.

Expect smart features like moisture-wicking fabrics, odour control, and quick-drying designs, which are ideal for multi-day trips where fresh kit is limited. And if you like to add a bit of personality to your base layers, many of our styles come in varied colours and bold patterns.

Whether you're planning a fast-and-light summit push or just want everyday comfort that can handle a hike, these are underwear options the Trekitt team trusts to go the distance. Browse the full collection of men's outdoor underwear at Trekitt online, and get your foundation layers sorted.