... 4" to 9" Color: red, yellow, blue, pink, green, white and black Material: Eco-friendly PVCWeight: 1lb to 15lbsSize: 4" to 9 ... "Color: red, yellow, blue, pink, green, white and blackUsed to strengthen and tone muscles and bones of the hips, backs, legs, hands, ... arms and shouldersCan help develop overall body muscles, balance and coordinationA great exercise alternative for any ...