1.material:inside EPS and foam 2.with adjustable webbing 3.multi-color 4.vents:11 vents 5.internal:sponge and velvety bycycle helmet,safety helmet,adult helmet,open face helmet packing:one pc in a PVC bag,30pcs in a cartoncarton size:88X46X55CM(30pcs)G.W.:5.7kgs1.material:inside EPS and foam2.with adjustable webbing3.multi-color4.vents:11 vents5.internal:sponge and velvety