He"ll love skating in the fun Ozone 500® Gravity IV Boys" In-Line Skates, which feature 70/65 mm PVC wheels and ABEC 5 bearings for a smooth ride. These skates have lace-up closures with power straps that offer extra support and a snug, secure fit. Dipped aluminum frame for durability. 4.9 lb. per pair.Features and BenefitsDipped aluminum frameLace-up closures with power straps for a supportive fit70/65 mm PVC wheelsABEC 5 bearings4.9 lb. per pair