HUPLE

The form is as simple as it gets: a hemisphere 60 cm in diameter, weighing 8.5 kg. The outer shell is vacuum-formed from hard ABS, and the inner layer is a soft, medical-grade integral-skin PUR foam that bonds to the shell during foaming in a two-cavity mould. The layered structure makes HUPLE rigid and durable, waterproof and buoyant: it floats on water even with a child sitting in it.

The rim gives a firm grip and extends in five petal shapes. Slots in the petals take inserts: cards for cognitive tasks and, in the concept, LED inserts with a gyroscope and Bluetooth connection that turn balance exercises into a game. Two discreet bumps on the rim add an extra margin of safety, although in therapeutic use the device practically cannot tip over.