This is a "pillow cooling gel mat" recommended for a good night's sleep in the hot season. It has been opened but is unused and has been stored at home. This product uses PCM material that naturally cools below 28°C (82°F). You can enjoy a comfortable cooling sensation even on hot nights. ■ Product Features ・Naturally cools starting at 28°C (82°F) ・Reusable and economical ・Breathable and comfortable ・Compact and convenient to carry ■ Various Uses ・On a pillow ・On your back (also for strollers, etc.) ・On your bottom (on chairs and cushions) ・At your feet ・Can also be used for pets ■ Product Size: 19cm x 27cm (7.5in x 10.6in) ■ Condition: Unused (although opened, the contents have not been used) Please understand that this item has been stored at home before purchasing. Instant purchase is welcome. Please feel free to ask if you have any questions. We appreciate your cooperation in refraining from price negotiations.