absoluteBLACK 4 Bolt Narrow Wide Chainring - 94 BCD - SRAM - Oval - Black - 9-12 Speed - 30T Heavy/Bulky They rely on being sized

They rely on being sized correctly to work and will be soft and comfortable enough to pedal around in all day

air has to fill the chamber before it will start to fill an empty tire/tube

Weight: 18g per strap

M: 27-35mm internal rim width

Padding: Standard Velcro/clip padding

absoluteBLACK 4 Bolt Narrow Wide Chainring - 94 BCD - SRAM - Oval - Black - 9-12 Speed - 30T Heavy/Bulky They rely on being sizedabsoluteBLACK 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