Make sure this fits by entering your model number. 【41.5cm(16.34inch) Big Size With 24.5°Section Angle / 360° Rotation】Bigger size than most wobble boards and rocker boards in the market. The professional designed 24.5°section angle keeps the board an unbalanced status, which can make more fun from doing exercise with it. Let’s start challenge it! 【Direct Contact With The Skin Material Used: Strong, Stable PP Base and Anti-slip TPE Bottom】 Made of high-quality environmentally friendly PP&TPE material, which is completely non-toxic. Both PP and TPE can be used for Baby's toys, which is suitable for all ages, especially children.