Ultra Paws Wound Boot Please measure dog paw width for best fit For paw width 1  - 2 use a Small, for width of 2-3 use a Medium, and for 3-4 use a Large Spandex sides allow for different healing stages and bandage A disposable wrap is included for use outdoors on non-abrasive surfaces Breathable polyester air mesh shell to allow air to freely flow in and around the wound area - reducing moisture and keeping the wound area dryer and cooler