This product is designed for children aged 1-3, offering a professional and safe solution for an enjoyable drinking experience. Its innovative large air vent equalizes the air pressure inside and outside the bottle, solving common suction problems in traditional sippy bottles for smoother drinking and minimizing the risk of liquid spraying or leaking. The unique air valve prevents leaks even when the bottle is inverted, reducing the risk of choking during lying-down use. Its dust-proof cover ensures a hygienic seal, and its straw with a fixed inward incline effectively reduces liquid residue.