This pack is anatomically designed to fit the contours of your dog. It gives your pet the capacity to carry a load in comfort without the pack interfering with his stride. Plus, it can be easily adjusted for a perfect fit. The bombproof construction with High Tenacity 210 denier Cordura fabric will hold up to the kind of punishment your dog can dish out. It features 550 gram fleece backed with foam pads where the pack contacts your dog's ribs, as well the top yoke which distributes the load over your dog's shoulders and spine. Soft tubular webbing secures the pack across the chest and under the belly. Reflective strips are visible from all angles for your companion's safety. Colors: Red/Grey size dogs capacity small 30-50 lbs 900 cubes medium 50-80 lbs 1100 cubes large 80+ lbs 1300 cubes