1.fixed easily by three-point safety belt.2.Use as booster after separated3.Adjustable cushion is suitable for children with different ages Packing:2PCS/CTN,N.W.:8KGS,G.W.:9.5KGS,Ctn size :38*45*75cm Container Quantity:1*20':436PCS,1*40':966PCS,1*40HQ:1080PCS