Smith Wildcat Sunglasses Matte Black / Photochromic Brown shokz Converts a regular Sram crank

Converts a regular Sram crank into a Boost specific setup

Includes Schrader valve core remover

As a spare tire for cycling

All new lightweight alloy frame with upright riding position blends road bike efficiency with the ergonomic needs of the everyday commuter

– Material: Aluminum

Smith Wildcat Sunglasses Matte Black / Photochromic Brown shokz Converts a regular Sram crankPrimary Lens: ChromaPop Photochromic Brown The most versatile lens that uses photochromic technology for varying light conditions. This lens shifts from clear to brown when exposed to sunlight so you can comfortably wear your sunglasses in a variety of lighting environments in most conditions.