Ergon GP1 BioKork MTB Comfort/Touring Grips. Features: The original ergonomic grip prevents numbness and fatigue by supporting more of the palm and reducing pressure on the ulnar nerve Made from 40% cork, sourced from sustainable forests in Portugal Cork also is remarkably light with amazing vibration damping qualities Choose from two diameters to fit small or large hands Carbon bar compatible 195g Specs: Diameter:large Color:brown/black