The Inflatable Bottle Stopper is a bottle stopper designed by Yu Huiyang which can be inflated and deflated to fit any size of bottle mouth. This bottle stopper has two valves – one is air intake and the other is an exhaust. When the user pinches the bulbous suction chamber (which contains the air inlet valve), the stopper inflates to seal the bottle mouth. When the user pinches the stem-like exhaust duct (which contains the air outlet valve), the stopper deflates to recover its original shape. It can them be removed from the bottle. [via]
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