Product description: Diameter: 33 cm Height: 5.5 - 13 cm (depending on the internal air pressure) NS. Height: approx. 6.5 cm (as a seat pad) Weight: 0.9 kg Material: PVC Scope of delivery: 1 * pillow 1 * pump (random color) Description: OPTIMAL ADAPTATION TO THE BODY. While other balance pillows are often stiff and uncomfortable, lose air after a short time or become permanently deformed, our nub pillows are made of a flexible and at the same time durable and stable material that hugs your body perfectly without changing shape or losing air. And with a knobbed and a smooth side, you can also influence your personal seating comfort. RELIEF FOR THE SPINE. Thanks to the flexible structure of the balance cushion, you can turn any office chair into an ergonomic exercise ball and achieve a comfortable and dynamic seating experience at all times. This keeps the spine moving and back pain and painful tension are a thing of the past. In addition, you can easily and flexibly adjust the degree of hardness to your personal needs with the enclosed air pump. EFFECTIVE STRENGTH AND BALANCE TRAINING. Balance cushion enables effective and flexible strength and balance training at any time and any place - whether at home, in the office, while traveling or as a supplement in the fitness studio. In this way, the sports or rehab program can be integrated anytime and anywhere and nothing stands in the way of your training goals. So nothing stands in the way of your personal fitness goal.YOU DO NOT NEED ANY EXPENSIVE FITNESS CONTRACTS to get healthy & fit, to feel that way and, above all, to look that way. Our mission is to offer you versatile, high-quality sports equipment for at home and on the go, which enables you to do an effective full-body workout regardless of time and location. In this way, the training can be optimally integrated into everyday life and there is more time for the really important things.