The Gymnic Sensy-Ball is soft and pleasant to touch and thanks to their bumps they provide a healthy stimulation of the pressure points. The three available size options allow a wide application range. The smaller version is particularly recommended for massage and manipulative exercise, whereas the two larger versions are ideal for low-impact exercise. All the three size options are recommended for reflexology and relaxing techniques. The product is supplied deflated and can be inflated with a needle pump. The 4" Sensory ball is packed in sets of 2 small balls (are inflated). Both 8" and 11" Sensy-balls are sold singly. Recommended weight (Sensory ball 9"-11"/20 – 28 cm): max. 80 kg - 180 lbs / Tested load capacity: max. 100 kg - 220 lbs.