The rubber bands are 13 cm and 16 cm long; you’ll receive one of each.If your handlebar circumference exceeds these measurements, the bands may wear out or break over time. We recommend not using them for larger handlebars.Related ArticlesI just received my TORCH Backpack: what should I know and do first?What are the key components of the TORCH Backpack?How do I know which size fits me?How do I measure my head for a helmet before ordering?What is the Universal Mount?