Disc O Sit (Disco Sit) Wobble Cushion from Ledraplastic. Used for stability training, and strengthening work while sitting, standing and kneeling. It is also a useful training tool to perform balance and motion exercises on the floor. Adjust inflation to suit the desired comfort and stability level. Disc\'o\'Sit can be used to improve posture in the sitting position or in the same way as a balance board or wobble board in ankle, knee or back rehabilitation. Highly recommended as an active seating device that can help improve concentration especially for children in a classroom setting with ADHD. Junior = 32cm Red - Recommended weight: max. 45 kg (100 lbs) / Tested load capacity: max. 200 kg (440 lbs). Aged 3+ Adult = 39cm Blue - Recommended weight: max. 120 kg (270 lbs) / Tested load capacity: max. 200 kg (440 lbs). Class I Medical Device compliant with European regulation.