About this item 【Vacuum Insulation】COKTIK insulated stainless steel water bottle has carefully chosen double walled vacuum insulation technology. Drink will be kept warm for 12 hours, and kept cold for 24 hours! 【High-Quality Material】Our water bottles are made using high-quality 18/8 stainless steel, and are free of BPAs or any other toxins. Stainless steel material is also environmentally-friendly and durable; it can be used for many years. 【Triple Lids & Leakproof】The drinking bottle is equipped with three individual lids(straw lid, spout lid, flip lid). There is a hook on the spout lid that can be hung on bags for easy portability. After undergoing many of our tests, we have determined that the bottle is absolutely leakproof and shatterproof. 【Easy Wash】Standard stainless steel bottle mouth is wide enough and convenient for both filling and cleaning. Stainless steel interior is smooth, and can be cleaned with a simple rinse. We also prepare you with cup brushes for easy cleaning. 【List of Items Included in Product】COKTIK 40 oz Insulated Water Bottle, 3× lids(flip lid, straw lid, and spout lid ), 2× straws, 1× cup brush. Worry-free lifetime warranty and professional customer service!