The Micro Caddy is a compact, aero-shaped saddle bag with a large elastic nylon strap that easily secures to your saddle rails for a low-profile fit. It's built from durable woven nylon construction and features labeled internal organizational pockets as well as an external, quick access multi-tool sleeve. Water resistant zipper with large pull loop. Available in Small, Medium, and Extra Large sizes. Micro Caddy S: Fits one small tube, plus some small repair accessories. External pocket fits one small multi tool. Micro Caddy M: Fits one medium or two small tubes, plus some extra repair accessories (depending on tube size). External pocket fits one medium multi tool. Micro Caddy XL: Fits one large tube, or two medium tubes, plus some extra repair accessories (depending on tube size). External pocket fits one medium multi tool. SPECS WEIGHT: S: 80g | M: 90g | XL: 111g DIMENSIONS: S: 140x55x55mm | M: 145x55x80mm | XL: 150x75x100mm