The Evolv Defy is the best selling men"s model and it just got an upgrade. The Defy VTR appeals to new and advanced climbers alike as a comfortable, great-fitting shoe that performs exceptionally well.Molded logo on heel rand.PROFILE: Asymmetrical toe profile (KA-1 last).SOLE: 4.2mm TRAX® XT-5 high friction rubber.RAND: VTR3D rand system (thicker in front toe area).UPPER: Elastic Synthratek synthetic upper.LINING: Nylon lining.MIDSOLE: MX-P: 1mm half-length midsole..