The Cask vacuum thermal bottle of the Waterline brand is made of high-quality SUS 304 stainless steel, which provides the product with a long life and durability. Double walls with vacuum copper insulation allow Cask to keep the temperature for a very long time: hot drinks or cold drinks remain so for up to 24 hours. A special copper layer between the walls of the thermos serves to retain such a small part of the heat loss as thermal radiation. Cask is comfortable to hold in your hand: the velvety coating of the case and lid prevents the bottle from sliding in your hand, and its volume, 500 ml, provides mobility and makes this model suitable even for women's handbags and small backpacks. Manual washing is recommended. - Soft-touch coating looks advantageous with both engraving and UV printing. - Vacuum copper insulation, double walls made of SUS 304 stainless steel ensure long-term temperature preservation up to 24 hours. - Completely sealed. - Convenient universal volume of 500 ml.