Improved no-spill drinking products providing safer, stronger and more durable no-spill caps. An exemplary no-spill cap comprises a flexible member and a rigid member, said flexible member comprising an inner face, an outer face, a spout portion, an air vent, and a lip the air vent comprises an outer surface and an inner surface such that the air vent is closed and airtight when in a resting position, and the air vent is open when negative air pressure is applied to the inner surface the rigid member comprises an inner face, an outer face, a first opening, a second opening, and a groove when the flexible member is coupled with the rigid member by nesting the flexible member inside the rigid member such that the spout portion rests inside said first opening, the air vent is lined up with the second opening, and the lip is inserted in said groove.Linvention concerne des produits à boire sans renversement comprenant des bouchons sans renversement plus sûrs, des bouchons sans renversement plus solides et plus durables, des bouchons sans renversement qui sont particulièrement adaptés aux adultes, et des bouchons sans renversement qui sont particulièrement adaptés aux enfants.
