CPSC certified 15 vent MTB style helmet with removable visorAdjustable retention system dial is easy to use even with gloves onIn-mold fused shell with heat sealed paddingAll PurposeIn-MoldSM/MD 20-1/2` to 22-1/2` (52 to 57 cm)Red15Head LockUPC/EAN/GTIN: 888571120453