Rockers on the bottom of these yoga boards allow for side to side movement and are gently curved, allowing students to explore their balance without suddenly tipping over. Felt fully lines the rockers to protect floors from scratches and nicks. The boards are constructed from a durable birch wood and feature a clear poly finish that stands up to routine use in institutional settings and keeps the boards looking like new for years. Two sizes make it easy for students of various ages and heights to use PowerPose. Choose Small (47”L, 10 lb) or Large (70”L, 14 lb). Both sizes are 15”W.