This Multiroll Functional Roller is an air-filled, unstable roll that's made in Germany. The air filling can be adjusted using a needle valve. This product is made of Ruton that is odourless, latex-free, and very resilient. It's also made of 100% recyclable plastic. The Mulitroll Functional allows a versatile use and varied training. The whole body is strengthened by deep muscular training stimuli. Through various exercises, individual muscle groups can be targeted. Various exercises can be performed in the seat, support, lying down and with additional equipment. The soft, comfortable material and the air filling create an adaptable and at the same time very dynamic base to train sensorimotor and proprioception. Therefore, the Mutliroll Functional is perfectly suitable for use in functional training. This product has a 660lb/300kgs weight capacity.