Questions? Leave a comment below! Water-repellent canvas uppers mold to your feet, breathe naturally and keep weight to a minimum Wide toe boxes let your toes spread and relax Flannel linings and 5 mm heat-reflecting insoles shield your feet from the cold; insoles can be removed for a more "barefoot" feel "XERO-drop" soles (low to the ground with non-elevated heels) allow for proper posture, balance and agility Shoes are flexible enough to let your feet bend, move and flex the way that feet are supposed to Flexible, 3.5 mm FeelTrue® rubber soles with 3.5 mm lugs protect your feet from underfoot debris and provide a natural feel with plenty of ground feedback FeelTrue rubber outsoles are covered by the Xero 5,000 Mile Sole warranty program Made with vegan-friendly materials