Moulded visco elastic memory foam has revolutionised this concept offering increased comfort and pressure relief. - The Designer Ring allows the user to sit for longer periods as visco elastic foam conforms to the body and literally 'moulds as you move' Reduces interface pressure on the body - Superbly comfortable and pressure relieving - Fitted inner cover - Outer cover available.

The R20 is one of the lightest power packs on the market, with a total carry weight of just 4.5kg, it is less than half the weight of other power packs currently available. This includes 3kg for the motor and a 1.4kg lithium-ion battery which can be disconnected and transported separately. This means that the R20 is easy to carry, store and transport for all users.