Only used once, basically brand new! 2L Crux® Reservoir was removed for hygienic reasons. Features *Air Support Back Panel: Designed with Body Mapping Technology to allow for maximum ventilation on the hottest areas of your back *Magnetic Tube Trap: Keeps your tube secure and accessible when you need it *Removable Waist Strap: Added stability when you need it *3D Vent Mesh Harness: Lightweight and breathable with added cargo. Designed for all-day comfort *Helmet Carry: Stow and secure helmet *Integrated Carry Pockets: Keep your tools and repair kit organized