Marukan Cooling Aluminium Gel Mat is an energy-saving, excellent product that does not use electricity for measures against pets' heat. Aluminium and polymer gel (with urethane) is a superb mat that cats like as "cool and soft". Repeat heat absorption and heat dissipation to keep an excellent effect. It's even more relaxed if you cool it in the refrigerator. It is 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.