The Blackburn Zayante Micro saddle bag is just the right size for holding a tube, tire levers, CO2 inflator and a mini tool with room to spare. It features a rubber O-ring type band that cleverly secures the bag to the seat post without marring the post. Also, there is no Velcro to potentially damage expensive lycra riding shorts. In addition to the O-ring band, there is the traditional adjustable strap and clip system for securing the bag to the saddle rails. A water resistant zipper helps to keep the contents dry.