Hot water bottles The british standard certified hot water bag, our flagship product, has received the certification in quality assessments due to its high quality materials and durable design. Premium hot water bags are available in red, green, blue, and other popular colors. Bottles can be made with a multitude of designs including squares, single diagonal lines, and double diagonal lines. Our hot water bottles are also available with cartoon character or designer patterns. Hot water bottles range in size from 300 ml to 3, 800 ml. 60pcs/ctn/ 45*37*30cm