The glass fibre reinforced sole provides excellent power transfer and the rubber XC racing pattern outsole promotes stable pedal engagement and secure walking grip

Diameter: 30mm

It's just a standard

micro-adjustable clamp will suit seat posts and frames between 25-50mm

Oakley Reduct Berm Long Sleeve Jersey - S - Blackout eBay The glass fibre reinforced soleTake on any MTB trail in confident comfort in the Berm Long Sleeve Jersey with a stylish crew neck. Moisture wicking fabrication keeps you cool, dry, and comfortable with outstanding breathability, and the 4 way stretch ensures a greater range of motion. Breathable knit graphic panels on the front and back provide all ride moisture management, and a reflective Oakely B1B logo near the drop tail hem scores style points while providing low light