Men's On Running lightweight shorts in black. Ultralight, versatile shorts with a perforated back.

While you're working up a sweat, the Lightweight Shorts are working on getting rid of it. Fast-drying, super-light and stretchy, their streamlined design has everything you want, and nothing you don't. Distraction-free. Because nothing should stop you chasing goals.

Soft but strong, the technical four-way stretch polyamide/elastane blends used in the front and inner briefs are fast-drying and offer total freedom of movement. Perforated polyester to the rear keeps you cool and the elasticated waistband hugs gently for a stay-put fit.

The Lightweight Shorts are engineered solely to help you perform better. A rear pocket and key loop secure your essentials, even when running at top speed. And, with zero zips or hard points, the shorts make light work of floor work too.