Material: 100% ALUMINIUM

and the waterproof-breathable 20K/20K Teflon EcoElite™ PFC-free membrane provides excellent temperature regulation

breathable 3L GORE-TEX® fabric offers the comfort and dynamic fit of four-way stretch

Anatomic arch support

Nylon composite material blended with 30% short-glass provides playful response

Trek Checkpoint SL 6 eTap Bike Carbon Blue Smoke 56 river Material: 100% ALUMINIUMCheckpoint SL 6 is a carbon gravel bike without limits. It's designed to take you places you'd never reach on a standard road bikelike the mud caked finish line of the world's greatest gravel races. A lightweight OCLV Carbon frame with gravel smoothing IsoSpeed, a Shimano GRX drivetrain, and extra mounts for gear and accessories make this bike a true gravel powerhouse and a great choice for serious all road adventurers. Specifications Frameset Frame: