Double-walled vacuum-insulated water bottle that is designed to keep your drinks hot or cold for hours. It has a high-quality stainless steel exterior and a food-grade inside that is BPA-free and will not leach any toxins into your beverages. 

The double-walled construction and vacuum insulation technology create a barrier that prevents heat or cold from transferring to the outside of the bottle. This implies that your beverages will remain at the same temperature for hours, regardless of the outside temperature. The Ervan Flask also has a large mouth hole that makes it simple to fill and clean. To avoid leaks, the bottle also includes a tight cover with a silicone seal. The Ervan Flask is ideal for anybody who wishes to keep their beverages cold or hot for extended periods of time. It's ideal for carrying on the move or keeping drinks cold or hot for extended periods of time.  

Anyone seeking for a dependable, high-quality double-walled vacuum-insulated water bottle should choose the Ervan Flask.