This wrap administers heat or cold to relieve a pet's aches and pains anywhere on its body. The wrap comes with removable packs filled with either 100% natural buckwheat and calming lavender that can be warmed in a microwave to soothe sore muscles or joints, or filled with non-toxic gel that can be chilled in a freezer to reduce painful swelling. The wrap straps fit comfortably around a dog or cat's fore- and hind-legs and the inserts can be positioned anywhere on the wrap or strap via hook-and-loop tabs. This flexibility allows the wrap to be used for targeted therapy of ailments like hip dysplasia or arthritis, or to regulate a pet's body temperature. The wrap is soft and pliable, allowing pets to move as they normally would, machine washable, and the reversible fabric has reflective trim that provides visibility for your pet at night. Includes one wrap, two straps, two hot packs, and two cold packs. Black/Red. For length, measure from base of neck to base of tail. Extra Small. For dogs and cats 8-13" long, 5-12 lbs.