This wobble cushion is extra large with a 55cm diameter, great for balance and improving ankle stability by standing on. Also ideal for animal therapy. Adjustment of the inflation will change the level required stability. One side has nodules on, this increases the grip on the floor during usage and can also be used for sensory work. Recommended weight: max. 120 kg 270 lbs / Tested load capacity: max. 200 kg 440 lbs. This product will need inflating, pump NOT included. Needs GY056. *Please be aware the colour of the inflating pump is random*. (Yellow-Red-Blue)