... parts 1, 270g,in-mold technique 2,L size,dull polish 3,33 air vents,high ventilation 4,factory direct price Bicycle Parts ... Specifications and AdvantagesTUV,CE certification;33 air vents, good ventilateBuilt-in in-mold technique , the cover is very goodfasten elastic could adjust ... days after confirmation About usWe have large quantity of bicycle parts in stock, so we can offer you this product at any ...