The Grail comes with DRYRIDE moisture wicking technology, which incorporates DRYRIDE hyperwick mesh in the toe box that both insulates and regulates warmth by pulling any moisture away from your skin, and evaoprtaing it through the waterproof and breathable shell membrane. This boos also comes with an InfiniFIT liner sole, which is a cushioned EVA platform that works to improve rebound, comfort, and cushioning. The Grail boot also comes with an Aegis antimicrobail coating, which inhibits the growth of any odour-causing bacteria.