The Defy LV is the most advanced entry-level shoe on the market. Featuring a slight camber and a more asymmetric fit than traditional entry-level shoes. It creates a more precise connection between the climber and the hold. The strap version is softer than the lace-up for increased sensitivity. The LV model has 6% lower overall volume than Defy for narrower feet or a snugger, higher-performance fit. Enjoy your climb in comfort and style._Max Performance: Use your street shoe size for an ultra-snug fitPerformance Fit: add a ½ size to your street shoe for a snug fit that is still comfortable to wear for a full sessionComfort Fit: add 1 to 1.5 sizes to your street shoeSplit tongue opening: for easy entrySingle strap closure: for a secure fitSoft heel construction: for all-around comfortPerforated upper: for breathabilityMidsole: 1.6mm plastic full lengthOutsole: 3.5mm TRAX SAS RubberUpper: SYNTHETICVolume: 0 (Low volume)PSR: 4Weight: 215g per shoeMaterials: Upper: Synthetic. Midsole: Full-length 1.6mm plastic midsole Outsole: TRAX 3.5mm full length Vegan: 100%