The Sendit Caddy is a lightweight, versatile cycling organizer strap which quickly and securely mounts to frame or seatpost, perfect for carrying tire repair items on bikes with limited space Three labeled compartments keeps gear organized and secure on the roughest trails. It's made from durable, high quality materials including polyester and neoprene, and it features rubberized elastics for added grip The strap is capable of holding up to one 25g CO2 cartridge and a 29” mountain bike tube in addition to a small multitool and tire levers