ALKALI RPD Recon + Roller Hockey Skate features ultra light quarter construction with additional stiffness, 100% heat moldability, increased energy return, and improved impact resistance. Alkali Pro+ Roller Last for increased width and comfort. Comfort Edge upper ankle pads. Flexible tendon guard for maximum range of motion and proper stride extension. Maximum Power Transfer PVC outsole with low profile wheel channels. Strategically placed wear patches. Tac-Lite internal liner. Perforated Felt Tongue. HD thermoformable lace bite tongue insert. Movement Stamped Extruded Chassis for a quicker turning radius, greater balance & increased power transfer. Alkali Recon indoor wheels. ABEC 7 608 bearings.