M's R1 Air Crew wrench Lightweight and durable within a

Lightweight and durable within a small packing size

Extended inner plate improves chain engagement

Additional clearance for 700x45c and 27

100% Shimano cable-pull ratio compatible (2:1)

M's R1 Air Crew wrench Lightweight and durable within aDescription Designed for folks who push hard and layer smart, the Patagonia Mens R1 Air Fleece Midlayer Crewneck delivers highoutput performance without bulk. Crafted from 100% recycled polyester jacquard fleece with hollowcore yarns, it dries fast, breathes easily, and manages moisture so you stay comfortable throughout climbs, cold mornings, or when the weather shifts. The crewneck cut and regular fit layer easily under shells and over base layers.