Benks Blizzard Cooling Case for iPhone 13 Playing games in high-quality mode may cause overheating to your phone, but with this unique Benks Blizzard cooling case, your iPhone 13 will run perfectly. The Freezemat technology, a temperature-sensitive and self-replenishing hydrogel, are combined to cool your iPhone 13 down for 2,3°C while using zero power and making no noise. Also, this heat dissipation case has a built-in magnetic metal sheet and supports magnetic wireless charging.