LED temperature indicates the internal water temperature, you do not need to check the temperature with your mouth and avoid burns;, Our vacuum-insulated stainless steel water bottle can block heat transfer. Maintains temperatures for Cold up to 8 hours And Warm temperature maintains for 3-4 Hours. 100% BPA-free, no toxin. Eco-friendly thermos;, Robust, corrosion resistant, dustproof, waterproof and rustproof;, For all occasions such as yoga, cycling, traveling, office, school, picnic, etc.