Portable thermos water bottle with 100% stainless steel interior, double walls and high durability casing that keeps the temperature of the contents stable for hours. The stainless steel ensures great durability over time and completely hygienic use without the toxic substances found in common plastic bottles. Does not absorb flavors and odors. Comes with a screw-on vacuum cap with a straw. Ergonomic design for easy transport. Very easy to clean.