Ck9-2 Cool K-9 Dog Cooling Jacket Medium Dog stays cool and dry Relieves body heat through the evaporative process Bright safe colors Simple easy to use Reflective for high visibility at night Wash by hand without harsh abrasives Medium Cool K-9 Dog Cooling Jacket Good for dogs around 30-60 lbs. Fits chest sizes 22-28' The Cool K-9 dog cooling jacket is a breakthrough in thermoregulating technology. This Dog Cooling Jacket works through Water-absorbing cross-linked polymers are sewn into supplex fabric. Just soak the dog jacket through with water and then put the jacket on your dog to help him fight off heat exhaustion and keep him cool on hot days. The dog cooling jacket acts as a perspration system. It absorbs heat from your dogs body then allows the heat to be dispelled into the air by the natural evaporative process. So instead of just panting and sweating through the pads of his paws your dog is essentially 'sweating ' which helps him to cool off. Check out the new revolutionary cooling jacket today your dog will love you for it.