Cool pad that provides a comfortable cooling experience using PCM material, which requires no electricity. It keeps you cool for 60-90 minutes in an environment of 25-35°C (more energy-efficient than conventional coolants). Using the physical phase change principle, like "ice that doesn't melt," it keeps your back cool and prevents body odor. Safe for use by adults and children. Designed for safety for both adults and children as a heatstroke prevention item. - Size: 22.5cm x 28.5cm - Weight: 190g - Material: PCM (Phase Change Material) Thank you for viewing. 535