Challenge Grifo Pro Clincher Gravel Tires Skuvault NPI An internal shank provides sturdy

An internal shank provides sturdy support as you round the bases

fleece feel while maintaining durability

We partner with the Better Cotton Initiative to improve cotton farming globally

making them comfortable and easy to clean

Soft-handed acrylic blend feels like a hug for your head

Challenge Grifo Pro Clincher Gravel Tires Skuvault NPI An internal shank provides sturdyThe best all around cyclocross tire ever created excels in wet or dry, soft packed, rocky and root infested courses, grass, and more The Grifo features fast rolling knobs and a center section that offers excellent pedaling and braking traction This handmade clincher combines a supple, 300TPI SuperPoly casing with natural rubber tread for improved grip, confident cornering, and quick handing. Includes PPS, a Puncture Protection System placed between