Spur your performance to new heights with the long-lasting durability, reliable support, and excellent comfort of the EVOLV Spark climbing shoe. ; Leather upper with unlined leather footbed. ; 3-D Air Mesh lines the heel and tongue. ; Semi-asymmetrical toe box maximizes control on edges and thin cracks. ; Tensioned rands offer both power and performance. ; Features a VTR rand (thicker front toe area) for added protection. ; Lace-up design for a secure fit. ; Two back pull loops for easier entry. ; Breathable microfiber lining in heel cup and toe box. ; Enhanced Arch Support (EAS) technology features a bulit-in arch structure directly into the outsole, providing midfoot comfort and support. ; MX-P 1mm stiff, full length midsole. ; 4.2 mm TRAX high friction rubber outsole. ; Made in the U.S.A. Measurements: ; Weight: 11 oz ; Product measurements were taken using size Men's 12, Women's 13.5, width Medium. Please note that measurements may vary by size.