Evolv Defy Climbing Shoes - Men's Black/Sulphur 4.5. Anatomical fit that is great for beginners and advanced climbers coupled with great looks make it a no-brainer for a first time or repeat buyer. The Synthratek VX upper and Agion Antimicrobial liner ensure lasting comfort and odor protection. The split tongue and dual hook and loop closure system provides easy accessibility and a secure fit. Specifications for Evolv Defy Climbing Shoes - Men's: Manufacturer: Evolv Men's Shoe Size: 4.5 US Gender: Male Age Group: Adults Color: Black/Sulphur Footwear Type: Shoes Activity: Climbing Weight: 8.5 oz Footwear Closure: Hook & loop Footwear Upper Fabric/Material: Synthetic Outsole Material: 4.2mm TRAX SAS Midsole Material: MX-P 1.4mm sensitive full-length Features of Evolv Defy Climbing Shoes - Men's: Vegan Friendly Synthetic- Synthratek VX synthetic upper. Split Tongue - Gives maximum comfort and easy on and off. Wider& Higher Volume Shape Full Length Midsole & Outsole - For maximum support and comfort. Opposing Closure Straps - For maximum tension. Molded VTR - Our Variable Thickness Rand (VTR) system puts thinner rand rubber in areas to reduce pressure points and hot spots around the foot as well as thicker rubber for increased longevity in the high wear zones near the toe for durability and performance. Trax SAS - Best friction plus maximum durability. Package Contents: Evolv Defy Black - Men's Evolv EVL0317-4.5-BLACK/SULPHUR: Defy Climbing Shoes - Men's Black/Sulphur 4.5 Evolv EVL0317-4.5-BLACK/SULPHUR: Defy Climbing Shoes - Men's Black/Sulphur 4.5