Safe, reliable and proven: The natural rubber hot-water bottle from Sänger® provides soothing warmth on cold nights and enhances your well-being. The Sänger® hot-water bottle is manufactured as a continuous body, not with a glued-in neck piece or additional seams Slats A smooth side releases the heat quickly and intensively, a laminated side releases the heat slowly and efficiently. One side with lamellas structured hot water bottles offer both possibilities at the same time. - TÜV type tested - Manufactured according to B.S. Standard 1970:2012 - EN 71 tested - ISO 9001:2008 certified - 100% natural rubber - seamlessly secure - ecological - resistant up to 90 °C - Knitted cover: Öko-Tex 100