We're throwing it back Y2K style with this new Rezerve design! PU upper; padded tongue and collar for optimal comfort and protection. Full lace closure. Durable rubber sole with abrasion resistant brake pad. Low Profile Wheels with ABEC 5 Bearings. The smooth PU upper provides durability and comfort, while the padded collar and tongue ensure comfort and foot security. The rubber sole offers extra grip and durability, and the ABEC 5 Wheel bearings and Low-Profile Rubber Wheels provide the perfect roll.