Xtratuf Ankle 6in Eco Deck Boot builds on our heritage and what we do best with the addition of Yulex, the World&';s first plant-based replacement for our standard neoprene. This lightweight silhouette features our signature non-marketing, slip resistant Chevron outsole. The ECO is 100% waterproof built with Yulex, a natural rubber derived from the sap of the Hevea Tree.This boot is equally as durable, flexible, and comfortable as the original Ankle Deck Boot. Recommend half sizes order up 100% Waterproof Slip-Resistant Chevron Outsole XPRESSCOOLA(R) anti-microbial evaporative cooling liner that helps regulate foot temperature to keep you comfortable in cool and warm environments. Front and Rear Pull-On Tabs