Flexibility and traction for little athletes-in-training. FEATURES: The Nike Lil' Posite One (CB) Infants' Crib Bootie is ultra-flexible and comfortable, featuring a thin, durable outsole with a grippy texture for excellent traction. Molded synthetic upper offers a snug, comfortable fit. Flexible, grippy outsole provides great traction. Pull tab at the heel for easy on and off.