An essential part of Pilates, this Stott Pilates Fitness Circle Pro may be used on the mat, reformer, or other equipment. Not only does the circle pro help maintain proper alignment, it also increases proprioceptive awareness. It’s made of sturdy spring steel to withstand high-intensity studio use. Choose from available sizes. Dimension Options:12 diam. x 2H in. 14 diam. x 2H in. Your choice of available sizes. Made from foam and steel. Your choice of available colors. Inner and outer foam grips for comfort. Durable spring steel for high-intensity use. Portable.