Runderwear™ performance underwear is award-winning underwear designed by runners, for runners. Our mission - to create the world's best performing underwear for athletes across the globe.

The Runderwear™ Men's Long Boxer Shorts are designed to give you maximum support with supreme comfort while running. Using our innovative technology means they are perfect for any level of runner and for any distance, and additional length in the leg provides greater protection for marathon and ultra distances.

360° Seamless Technology

Our underwear range is constructed using 360° seamless technology. This means that our products are seamless and tag free - resulting in less irritation, no rubbing or digging into your skin and a revolutionary experience in comfort and performance, no matter when or where you use them.

Chafe-Free, Ergonomic Design

Our underwear is finished using functional flatlock edging. This type of fine stitching results in a premium finish and combined with a gel strip around the thigh gives you underwear that stays in place and doesn't ride up. Time after time, mile after mile - you'll stay chafe-free, guaranteed.

Moisture-Wicking, Breathable Fabric

We use a technical fabric in our underwear range that quickly takes sweat away from your skin. We also use carefully positioned micro perforations to maximise breathability and improve your core temperature control. This helps to keep you cool, dry and comfortable, so you can always focus on working hard and achieving your best.

Lightweight Durability

The technical fabric that we use is lightweight, and according to some of our customers, feels like you've got nothing on at all. They can be machine washed at 40° for convenience and will always retain their colour, shape and performance.