The Rollerblade Apex Platinum Coral inline skates feature a durable, ventilated shell and Premium Jr. liner for excellent support and protection. The frame can be configured with three or four wheels for versatility.Side protection plates, a reliable buckle closure system, and a frame length that matches the matte black wheels guarantee excellent maneuverability. Four-size adjustment allows the skates to adapt to growing children's feet. The included brake is optional for installation.Features of the Rollerblade Apex Platinum Coral Inline Skates :Outer Boot: Apex, molded, ventilated, adjustable in 4 sizes, side zipperClosure: Cuff lock buckle, 45° micro-adjust buckle, lacesFrame: 3&4WD Extruded Aluminum, 231mm/9.1" (max 4x76mm/3x84mm), 219mm/8.6" (max 4x72mm/3x80mm), 207mm/8.1" (max 4x68mm/3x76mm)Wheels: Rollerblade 4x76mm(235), 4x72mm(210), 4x68mm(185) matte 80A for allBearings: SG7Cuff buckle with lock, micro-adjustable 45° buckle, and laces.Heel shock absorber minimizes vibrations, increasing riding comfort.The low center of gravity design guarantees stability and flexibility in choosing the settings; frame lengths are: 231 mm (4x76 mm/3x84 mm), 219 mm (4x72 mm/3x80 mm), 207 mm (4x68 mm/3x76 mm) mm).Dedicated matte wheels fitted to the following sizes: 4x68 mm (185), 4x72 mm (210), 4x76 mm (235); equipped with SG7 bearings. YouTube video:https://www.youtube.com/embed/t1cHyVtp1WM