2mm in diameter

Pros: Light breathable design is comfortable and low-profile so you'll be be able to pedal around in them all day

plastic and vinyl

Made from Hardened Alloy Tool Steel

You can purchase the Magicshine Helmet Mount (Helmet Mount for All Garmin Quarter Turn Devices) separately to mount the light on your helmet

Granite Design Rockband - Australian - 480mm Heavy/Bulky 2mm in diameterThe Granite Design Rockband is a simple and lightweight solution to on bike storage. The inner hook and loop strap ensures a secure connection with no rattles and with weights starting at just 23 grams, what you can strap to your bike is up to your imagination! Specs: Available in 450mm and 480mm options. Length: 450mm Width: 3. 2cm Weight: 23 grams Length: 480mm Width: 3. 2cm Weight: 25 grams