Ultra-light 5" shorts designed for speed and performance, with a supportive inner brief and secure zippered pocket Ultra light. Super short. - Made for running, training, and much more, get that faster-than-fast feeling in these lightweight materials and in a 5-inch length. The adjustable waistband instantly improves comfort, while the antimicrobial inner brief treatment keeps you fresh. Supreme comfort - The four-way stretch woven fabric is smooth against the skin, while the supportive inner brief keeps you comfortable even over long distances. A perforated mesh back increases airflow, keeping your temperature regulated even when you're working hard. Zipped back pocket - Designed for (and by) runners who know exactly what they need, when they need it. Like the integrated back pocket with zipper plus a key loop to safely store essentials. Or the PFC-free DWR material that repels rain | On Men's 5" Lightweight Shorts in Cobalt/Black, Size: Medium. Super lightweight, shorter length, runn