SERAFINO ZANI Celsius Series 18/10 Stainless Steel Vacuum Insulated Water Bottle/ Thermal Flask Thermos (16 oz/500ml) 1. You can open the bottle in one second by its magnetic button; Thermal bottle is user friendly and convenient 2. After pressing the water button, the red silica gel ring appears which allow you to distinguish its opening state readily 3. The magnetic pressing stopper and bottle cap adopt screw-less design which made its structure simpler and prevent the bottle from being the breeding ground for bacteria. 4. The 360 annular water outlet allows you to pour water readily. 5. Double purpose cup/cap is environmentally friendly and convenient.