Hot Water Bottle with Knit Cover - Easy to Fill - 2 Liter (~1/2 Gallon) CapacityHelps with sore muscles, stress or cramps, arthritis, aches and pains, stiff necks, lower back pain, menstrual cramps and other common aches and and can also doubles up as a cold compress to help reduce swelling from minor injuries or fever Made of odorless and recyclable thermoplastic that holds heat longer than traditional rubber bottles Easy to fill wide mouth and anti spurt lip prevents water from spitting back out Transparent design eliminates