These Nike Flex 7" Distance mens running shorts are designed to give you supreme comfort with built-in briefs and an elastic waistband for secure support. The stretch Dri-FIT fabric wicks away sweat and helps keep you dry and comfortable. They are made out of 100% polyester. They feature an elastic waist with adjustable interior drawcord fastening for a snug, comfortable fit. They also feature two mesh-lined side slit pockets, a PU laminated zip pocket on the back-right hip for dry secure storage, and a small interior waist pocket for secure storage of small valuable items. Nike Flex fabric stretches for natural range of motion. The lightweight built-in briefs provide support and coverage while offering a soft, comfortable feel during repetitive running movements. The mesh inseam gusset and side panels offer targeted ventilation. The hem vents enhance range of motion. Reflective details increase visibility in low light conditions.