Provides amazing back ventilation

Materials: Made from 100% polyester so it's light and draws moisture away from the body to keep you dry

border-style:solid

Hot Tip: If the GoPro mount seems slightly loose after hand tightening

absoluteBLACK 4 Bolt Narrow Wide Chainring - 64 BCD - Oval - Black - 9-12 Speed - 28T Envelope Shipping Provides amazing back ventilationabsoluteBLACK is dedicated to producing the world's finest oval chainrings and were the first to crack the code to discover the correct shape and 'clocking' to make an oval chainring work. They learned how to maximize the part of the stroke where power is produced and minimize resistance where it isn't which has the effect of smoothing out the delivery of power throughout the pedal stroke and improving efficiency. Many other brands have followed suit