Gymnic Disc 'o' Sit Jr. Inflatable Seat Cushion, Red Designed to promote better posture, allowing the body to constantly try to find a balanced pelvic position by engaging the core; Simply adjust the inflation intensity in order to customize the stability level Elongating the spine with proper posture can reduce the pressure on the lower back, relieving stress and pain; Good posture promotes improved memory, focus and productivity Perfectly suitable for the small chairs of the nursery and primary school; Recommended for ages 3 and up Phthalate and BPA free; Made from durable, latex-free, vinyl which supports a maximum weight of 100 lbs. Available in one size, measuring 26 cm L x 26 cm W x 7 cm H; Product compliant with the 93/42/CEE regulation for Class I Medical Devices