The On 5” Lightweight shorts are minimalist shorts that are ready for maximum speed. Ultra lightweight and Swiss-engineered to make you feel fast, the short’s 5” length and four-way stretch materials are moisture wicking and give you more freedom of movement as you run to reach your goals. Comfortable from the very first try on, these shorts have a supportive inner brief and perforated mesh back that increases airflow while you work up a sweat. These running shorts give you high-quality performance—they are made from PFC-free DWR that repels rain to keep you dry. In our On 5” Lightweight Shorts review, our testers loved the integrated zip-free back pocket and key loop that can store a phone, doggie bags, credit cards or keys. Move seamlessly whether it is running around the track or on the trails in the On 5” Lightweight Shorts.