【New, Unused】 I opened it, but I'm selling it because I'm not going to use it. The box is a little torn, but the contents are clean. 【NASA Developed PCM Utilization! Freezes Naturally at 28°C】Cooling Goods, Reusable, Cooling Cushion, Heatstroke Prevention Goods, Office, Telework, Gaming, Driving, Outdoor, Fireworks Display, Festivals, This Summer, Posture Support & Cooling Combined, Blue 【Reusable - No Condensation!】 How does it achieve its cooling effect? Cooling goods sold by other companies require charging or water supply for cooling. Our PCM cooling sheet requires no water supply or charging at all, and can freeze naturally in about 60 minutes in the refrigerator, about 40 minutes in the freezer, about 30 minutes in ice water, and even in air conditioning (28°C or lower)! Once frozen, you can feel the coolness for over 150 minutes! Due to the material and special structure, it doesn't condense even after this time, so you don't have to worry about your clothes getting wet. Furthermore, it's not a disposable material and can be used repeatedly over 100,000 times. From now on, you don't have to endure the scorching heat, and you can enjoy a cool summer one after another. Size: 27.5 * 19.5 * 3cm