For the boulderers and serious sport climbers out there, the Lyra features a 3D-molded Torque heel, which has a super-snug fit and has been outfitted with textured X5 rubber for maximum grip, hold, and sensitivity when you're heel hooking your way up your newest problem. There's a rubber patch on top of the toe, too, to assist with toe hooks, and a slightly elastic R2 rand that hugs your foot without squeezing it to death.

• Tek Flex synthetic upper
• 3.8mm Science Friction 3.0 rubber with 2.2mm R2 rubber rand
• Arch Flex AES polycarbonate midsole
• 3D-molded Torque heel with X5 rubber
• Power Upper rubber toe patch
• Polyester footbed
• Moderately asymmetrical shape
• Two hook-and-loop straps