Trek Checkpoint SL5 Bike Size:58 a standard lace is paired

a standard lace is paired with a L6 Boa® for precise fit

My Custom Fit 3D Sport Liner | 30% Thermo Foam – 3D construction incorporates thermoformable inserts around your ankle and heel that instantly resolve pressure points for unmatched foothold

Inner Liner CF Liner

Progressive resistance offers the widest resistance range and road-like feel

Trek Checkpoint SL5 Bike Size:58 a standard lace is pairedCheckpoint SL 5 is a carbon gravel bike made for epic all road adventures. It's built with a Shimano GRX drivetrain and hydraulic disc brakes, but the defining feature of this model is the lightweight OCLV Carbon frame with IsoSpeed, a decoupler at the top tube seat tube junction that provides additional compliance over rough terrain so you can stay stronger longer.