• Made with recyclable, odorless, high-quality thermoplastic PVC. • Large opening with plastic cap that facilitates filling and prevents leaks. • Explosion-proof insulation bag, withstands more than 1,000 pounds of pressure. • Size of 31 x 20 cm, retains heat for up to 7 hours. • Ideal for relieving muscle pain or warming feet in bed. • Suitable as a cold compress for fever or mild swelling. • Capacity of 2000 ml, wide neck for easy filling. • Reminder: fill up to two-thirds of its capacity and replace every two years. • Do not heat in microwave and avoid prolonged contact with skin.