The On Men's Lightweight Active Shorts are an ultralight, versatile essential that athletes who work intensely need for comfortable runs or training sessions. These shorts are engineered solely to help you perform better. A rear pocket and key loop are included to secure your essentials, even running at top speed. The fabric consists of technical four-way stretch polyamide/elastane blends used in the front and inner briefs are fast-drying, perforated polyester to the rear keeps you coo, plus an elasticated waistband that hugs gently for a stay-put fit. While you're working up a sweat, the Lightweight Shorts are working on getting rid of it. The On Men's Lightweight Active Shorts are fast-drying, super-light, and stretchy, with a streamlined design featuring everything you want, and nothing you don't.