High quality 400NBS cupsole for grip, flex & boardfeel. Iconic silicone éS accent increases durability and dual lacing provides an option to avoid griptape abrasion. The unique STI Thermothane toe piece is made from a similar material to the urethane in your wheels and provides the perfect flick. Tongue stabilizers keep the foot snug and STI Energy foam insoles provide 200% energy return and supreme comfort mesh quarter panels and tongue increase breathability.