Northwave extreme xc mtb spd shoesthe stylish and ultra light northwave extreme xc mtb shoes have been created using the lightest materials and latest design techniques to reduce the overall weight of the shoe the result is a shoe with the best technology and style featuressole hyperlight xc michelinupper ultra light microfiber with nano holes laser cuttingupper construction biomap without stitchingclosing system 2s slw2 strapheel integrated heel system with no slip heelfootbed extreme