The Spin Disc has a unique oblong base (26"W x 24" L) that spins freely on a fixed angle. This product accommodates children up to 125lbs. Spin Disc is a great balance training device and builds core strength and coordination. An ideal sensory integration tool for your home, gym, or clinic. The Spin Disc is ideal for children with Sensory Processing Disorder and Autism as it provides the sensory stimulation many of them crave. The disc also helps children with balance issues as they can sit, kneel, lay on either their tummy or back while spinning on the disc to improve their balance and coordination skills.