The Cask vacuum thermos bottle by Waterline brand is made of high-quality SUS 304 stainless steel, which ensures the product's long life and durability. Double walls with vacuum copper insulation allow the Cask to maintain temperature for a long time: hot or cold drinks stay that way for up to 24 hours. A special copper layer between the walls of the thermos serves to retain such a small part of heat loss as thermal radiation. The Cask is comfortable to hold: the velvety coating of the body and lid prevents the bottle from slipping in the hand, and its 500 ml capacity provides mobility, making this model suitable even for women's handbags and small backpacks. Hand washing is recommended. - The soft-touch coating looks great with engraving or UV printing. - Vacuum copper insulation, double walls made of SUS 304 stainless steel ensure long temperature retention for up to 24 hours. - Completely leak-proof. - Convenient universal volume of 500 ml.