This self-sealing pour spout is by Cardboard Helicopter, an industrial design consultancy based in Cleveland.
Listen beautiful relax classics on our Youtube channel.
“The one-of-a-kind ball-bearing device creates an air-tight seal for freshness. Many iterations were completed to perfect the form of the spout to allow liquid to flow smoothly from the drip-resistant spout when the bottle is tilted. A set of ribs allow the spout to fit most store bought and decorative bottles.”
The spout is in production by home products company Jokari.
Source: core77