8 mm drop; due to variances created during the development and manufacturing processes, all references to 8 mm drop are approximate Fresh Foam midsole cushioning is precision engineered to deliver an ultra-cushioned, lightweight ride GORE-TEX® waterproof fabric protects feet from wind, rain and water without sacrificing breathability Snug-fit bootie upper construction Reflective accents designed to catch the light Toe Protect technology helps protect feet from rocks, roots and trail debris Vibram® outsole provides superior grip. Vibram® is a registered trademark of VIBRAM S.p.A All rights reserved.