2L Hot Water Bottle with Hearts Fleece Cover Winter Warm Natural Rubber Bag Hot water bags are usually used to relax your muscles by giving them the required heat. It is helpful in eliminating muscle pain, curing sprains and more./p> FEATURES: Perfect for cold nights Soothes aches & pains related to sports injuries, muscle soreness, etc. Helps you fall asleep swiftly to ensure a great nights rest. Made from natural rubber. Ribbed surface on both sides helps control heat release. SPECIFICATIONS: Capacity: 2 Litres Size of bottle (approx): 35cm x 20cm - standard size. SUGGESTED APPLICATIONS: Boil water. Let it cool to a safe temperature. Pour water into the spout. CERTIFICATIONS: Conforms to British & Australian Safety Standards Approval Code: BS 1970:2012