Features: - The fabric does not contain chemicals, polymeric materials, adhesives, crystals or phase change materials.?All fibers used are safe and non-irritating.? Compared with ordinary moisture-proof fabrics, this kind of fabric has the characteristics of lightweight, breathable and comfortable to wear - The core technology of refrigeration is cold fabric.?The principle of feeling coolness is that the fabric can adjust the temperature by absorbing heat, and the coolness factor can make the skin feel cool and comfortable Specifications: Size(Option) ?: 40cm * 30cm / 15.7" * 11.8’, 50cm * 40cm / 19.7’ * 15.7’, 70cm * 50cm / 27.6’ * 19.7’, 100cm * 70cm / 39.4’ * 27.6’ Material: CoolCore Fabric Package Includes: 1 * Pet Ice Block