The trolley is made of cotton , equipped with an anti-skid bearing and a long wear-resistant pulley firmly fixed on the cable.It's usage in small group for pre school and teach  student sports lessons.It's full of fun game.This set comes in consists of 2 cloth with handle and 2 balls, 2 racquets with wooden handles and cotton cloth.Measurements of cotton cloth: 38 x 21 cm,Measures wooden handles: 25 x 2,5 cm,Dimensions of cotton bag: 9 x 9 cm,Diameter rubber ball: ø 6,5 cm.