PowerDyne - Arius Split Butterfly Cushions (8 Pack)Made from high quality urethane, Arius Split Butterfly Cushions retain energy and release it when you need it most. Designed specifically for the Arius Platinum plate, the patented design of the Split Butterfly Cushion provides Progressive Lateral Movement, creating efficient pressure while eliminating stress points found in traditional roller skate plates. The cushions can be interchanged to match any skating style. Packaged in a compact and durable