Material: Rubber Package included: 1 x Hot Water Bottle + 1 x Cover During the cold winter days and nights, you need a bit of extra warmth with a hot water bottle! FIGHT THE COLD; The perfect solution to warming up on a chilly evening. The cover insulates your hot water bottle cover to keep it warmer for longer. Ideal as a bed warmer put it under your cover or pillow 10 minutes before going to sleep to keep the blanket heated throughout the night. GREAT GIFTS; The perfect gift for Christmas, Valentines, or for other special occasions such as an anniversary or birthday. Note Please allow 2-3 cm difference due to manual measurement. Besides different computers display colors differently, the color of the actual item may vary slightly from the below images, thanks for your understanding(1 inch = 2.54 cm)