Ruffwear Singletrak Pack - Featuring two collapsible water bottles, two stash pockets for adventure essentials, and five points of adjustment for a customizable fit, the Singletrak is a great option for long days on the trail. Customizable fit with five points of adjustment allows for full range of motion Low-profile side pockets conform to the body, allowing dogs to be agile Oversized handle for easy lift-and-assist Two leash attachment points: anodized aluminum V-ring and webbing loop Foam-padded chest and belly straps for comfortable, extended wear Two 0.6-liter collapsible, BPA-free hydration bladders Low-light visibility with reflective trim and light loop for attaching The Beacon