The K9 Sport Sack FLEX is the most up to date, upgraded, ultimate dog carrier backpack.
- 3-1 sizing technology, so you can adjust your dog to get the perfect fit.
- New waist belt to help distribute the weight of your dog
- Extra comfortable shoulder straps to help out with the heavier load capabilities.
- The colors blue and green were chosen for their reflective purposes that will help you and your dog stay as cool as possible on your adventures.