Ltpgtltstronggtthe 66fit wobble cushion 35cm combines three great products in oneltstronggtltpgtr ltpgtthe 66fit stability disc 35cm is ideal for beginner to intermediate users it features two textured sides one with large soft spikes for standing and the other with small dimples which are comfortable yet effective for sittingltpgtr ltpgtuse the balance disc as a training aid to improve balance and coordination whilst standing the disc is particularly effe