Press and drink, that's the principle of the pop-up drinking bottle. Press the spout and the bottle opens, press again and it closes. Very handy during active moments and for a quick sip in between. Or just to take to school of course! The Campus pop-up drinking bottle is guaranteed leakproofand is also easy for children to use. The bottle is equipped with a handy loop, making it easy to take it with you. The whole bottle is dishwasher-safe and the cap is easy to take apart, so the leakproof pop-up drinking bottle will go with you in your bag every school day without any worries. This drinking bottle is easy for children to use themselves and has a handy carrying loop.""""