Marukan Cool Feeling Aluminium Gel Mat is an energy-saving cool product that does not use electricity to protect pets from heat. Aluminium and polymer gel (with urethane) are excellent mat dogs, like "cool and soft". Repeat heat absorption and heat dissipation to keep the cool effect. It's even cooler if you cool it in the refrigerator. Recommended for measures against summer heat. It can be set as it is on a pet bed. There are individual differences in the coldness you feel, and it will also change depending on the environment where you are.