These foam blocks give beginning gymnasts a safe and less intimidating way to learn how to use parallel bars before moving on to competition bars. The base is made of high-compression polyurethane foam and covered with 2" thick cross-link polyethylene, creating a durable and safe training tool. Two-color design includes a bright yellow band to serve as a hand rail. Webbed polyester handles make transportation easy. Blocks are sold as a pair. 48"L x 24"W x 48"H each; 150 lb total. Truck delivery.