SIDI Glacies Cycling Boot - Black/Black 47 Millennium Fit ModelNumber=K5256 Features a weight saving 4-bolt

Features a weight saving 4-bolt design with a BCD of 110 mm Ring Position/Type Outer Tooth Count 52 Drivetrain Speeds 11 Chainring BCD 110 Shimano Asymmetric Color Black Defined Color Black Combination 36/52T

Enduro ABEC 5 low-drag sealed bearings

The thin profile means better cornering clearance

Air Release Yes Gauge Type No Primary Color Black Pump Barrel Material Aluminum Pump Head CLIK Valve Presta Schrader

SIDI Glacies Cycling Boot - Black/Black 47 Millennium Fit ModelNumber=K5256 Features a weight saving 4-boltExperience the pinnacle of performance with the new Gore Tex EPE Membrane with Ripstop offering water resistance scratch protection and a flexible fit. Anatomical heel construction and Millennium Fit deliver all the stabilization and control without extra weight ensuring superior comfort for everyone. The Quicklace closure enhances safety and speed while the X2NC sole with stiffness 5 and grip sole inserts provide unparalleled control and comfort.