Why choose KOODEE insulated water bottle? <br> 1. Double-Layer vacuum insulation The inner layer of KOODEE stainless steel water bottle adopts unique copper plating technology, which prevents heat transfer more efficiently than ordinary cups, and can keep your favorite beverage hot and cold for several hours. <br> 2.18/8 high quality stainless steel KOODEE wide-mouth water bottle is made of high-grade 18/8 stainless steel, without BPA, to keep your daily drinking water hygienic and healthy. <br> 3. No sweat design Double-layer vacuum effectively prevents condensation. Whether you are drinking hot or cold drinks, the outer wall of the stainless steel water bottle will not condense condensation and prevent sweat <br> 4. Durable powder coating Long-lasting powder coating provides a smooth feel, keeps the appearance colorful, scratch-free and durable 5. Leakproof straw lid The straw lid has a thick rubber ring inside. When the nozzle is in the closed position, the cover is absolutely leak-proof <br> 6.Leak-proof spout lid: it will not leak even if it is put in a backpack