K2 Skate Men's F.I.T. 80 ALU Inline Skates Original K2 Softboot Stability Plus cuff is the perfect blend of support where you need it, eliminating skate weight and offering versatility for a wide range of skaters Die Cast Aluminum frames are known for providing excellent power transfer and stability at speed Wheels/Bearings: 80mm, 80a/ABEC For a custom fit, traditional lacing allows you to manipulate the laces and tension to hold the heel, mid-foot, or any spot you want a snug fit