Description of Mammut Samurai Climbing Shoes Top-grade lace-up shoe for all climbers and boulderers who place particularly high demands on shoe performance. Features: Fabric: Leather, Synthetic Leather Lining: None Sole: Vibram® 4mm Last: Radical A Weight: 400g Asymmetric and downturned lasts for perfect pull in overhangs and power transfer to small steps Material mix of synthetic and natural leather allows comfort and performance to be coordinated in an ideal ratio Special rubber heel construction ensures the build-up of a perfect and long-lasting pre-tension Progressive transfer of the powerflow from the foot to the toes Soft anatomical cut midsole for increased edging power Super Sticky Vibram® XSV rubber Smooth lace-up system