Cool & Heat: For keeping you cool during hot summers, for warming in cold winter days. With a soft, fleece cover, prevents burns caused by direct contact with your skin and keep warming. Durable and Safe: Made of thick natural rubber, non-toxic, odorless and recyclable. Anti-slip and anti-scalding grid texture surface, making sure maximum safety and transfer the heat well. Multi-purpose: Used for warm, sore muscles treatment, stiff necks, back pain, period cramps, stress or joint, during pregnancy and cold application for fever or subsidence of minor swelling wounds. Easy to Use: Wide mouth design with a anti spurt lip prevent water spitting back out. Fill only to 2/3 water capacity maximum. Never fill with boiling water directly. The cover (100% polyester) is washable. Perfect Gift: Heating assistant for bed warming at cozy night. For Birthdays, Christmas, Valentine's Day and Bonfire Night. Ideal for father & mother, friends and children at the chilling winter!