The Nike 7 Bike Shorts are destined to be your girls' new favorites. Crafted with stretchy jersey fabric, these bike shorts offer a lightweight feel and extra support so your grade-schoolers can play and move around all day. From playtime at the park to downtime at home, nothing can hold your girls back when they step out in the Nike 7 Bike Shorts. Stretchy waistband provides a snug and secure fit. Inseam: 7. 62% cotton/32% polyester/6% elastane. Imported.