The Lezyne Roll Caddy features a simple roll-up design for various ride necessities, constructed of a durable nylon fabric. Strap it to your saddle rails or toss it in your pack. The large, adjustable nylon strap slides easily to secure and accommodate what's inside, and the wide open pockets can fit a 29" tube or a Power Lever XL. The Roll Caddy has an internal zipper pocket to secure your small items.