Achy Paws is made with activated bamboo charcoal that reacts with your dog's body temperature for therapeutic relief. Older dogs are more prone to joint discomfort in their later years so the comfort from an Achy Paws Therapeutic Dog Mat can help ease their achy joints, muscle soreness, and any other discomfort they may be experiencing. Our dog mats are made with triple-layer fabric for ideal softness and comfort. Achy Paws is available in 5 sizes to accommodate any dog breed. Dogs are immediately attracted to the inner layer of bamboo charcoal so all you have to do, is lay it on the floor, sofa, or bed and they'll usually go right to it. We even had one customer share with us that the first time their dog was first introduction to an Achy Paws mat, they laid on it for 3 days straight, with the exception of meals and potty breaks.