The balance trainer is designed for use dome or platform side down, requiring balance and stabilisation to challenge the cardiovascular system and increase muscle strength and flexibility. Offering a dynamic surface that you can stand, sit, kneel or lay on to challenge your whole body. It is made from burst-resistant material and has a non-skid, non-marking base. You are able to complete more than 100 types of exercises. This item should be used without footwear to avoid damage. You must store it away from sunlight and heat to avoid deformation and keep away from sharp objects to avoid puncture. This cushion includes a hand pump. You can use this to inflate the dome to 7'' - 8'' height.