The Mammut Men's Redburn GTX is a highly technical & high-grip Approach multifunction shoe incorporating a wealth of innovations. The patented Mammut® Base Fit lacing transfers power to the soles & prevents pressure points & slipping in the shoe. An elastic tongue design in the form of a sock allows easy entry & ensures a better, wrinkle-free fit. The high-grip gripex™ Cougapproach sole developed by Mammut® & a stable, lightweight EVA IP wedge with integrated Mammut® Rolling Concept® ensure safe & comfortable ascents. Breathable GORE-TEX® Extended Comfort Footwear Membrane together with an abrasion-resistant PA fabric ensure water resistance. Rubber & velours leather reinforcements combined with board lasting for protection & durability.