1.this inline skates also call roller skates. 2.the skates have CE/EN71 certificates. 3.high rebound pu casting of skates. VampSandwich meshSize30-33,34-37.38-41Wheel70*24*,64*24 pu castingBearingAbec-7ChassisAluminiumColorBlack/Red,Blue/Black,PinkAdjustable systemBack pushing adjustableCarton size74*46.5*38.5cm(L)/73.5*36.5*42.5cm(M)/70.5*31.5*40.5CMOut packing6prs/ctnQty/40HQ3500pcs You'll need ...