LONG-LASTING HEAT: Our two-pack hot water bottles have a large 2 liter capacity and can retain heat longer than regular hot water bottles. Ideal for snuggling up in bed for a long time and keeping your hands, legs, stomach or feet warm on winter nights. SAFE AND DURABLE: Uses high quality thermoplastic material non-toxic, recyclable and skin-friendly quality. With a thick and sturdy outer texture and ribbed to provide a strong thermal barrier, the water bag can protect you from any overheating or burning. 100% safe to use LEAKPROOF DESIGN: The mouth of the bottle is wide enough for easy water filling and can save you from getting burned. Has an airtight cap to prevent any leaks. And the hot water bottle is transparent, so you can easily check the water level inside. SOFT MESH COVER: Intimately supplied with a blue cover and a gray cover for extra protection from your skin. The bag cover is lightly knitted to give you great comfort and can make the hot water bag dust-free. Easy to apply or remove and machine washable. PERFECT GIFT CHOICE: Looking for the perfect cold weather gift for your mom? Try hot water bottles. Perfect for birthdays, Christmas, Mother's Day, Thanksgiving Day and other special times. Give it to your mom, dad or kids and show your love!