Product Description Specifications Quarter Package: Heatmoldable Revel IX with Pro Plus Stiffness Comfort Collar Liner: Moisture-wicking Clarino Tongue Construction: Two-Piece 9mm Pro Felt Outsole: Stiff Carbon Fiber Frame: Alkali Magnesium Chassis Featherlight without compromising strength Sizes 6.0-13.0 /(2) 76mm in the front and (2) 80mm in the rear Alkali Square Flush Two-Piece 6mm Axles Wheels: Konixx Pure-X Dual-Pour (+0) Indoor Wheels Bearings: Helo Quark Bearings Weight: 1,357 grams (Size 9)