Protects against intense heat while sleeping. Freezes up to 76°F (28°C). Even on those nights that are hard to sleep; *Keeps you cool and cool. Can last for about 3 hours at a temperature of 87°F (30°C), (As researched by Unichika Garmentec Co., Ltd), Does not condensate, naturally freeze below 66°F (28°C), Can be used repeatedly, block shape that fits easily on the head. Uses special material "PCM". Adopts special material with temperature regulation. It can be used on your back, on your hips or on a nap sleep.
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