Container lid with drink-through opening

A beverage container lid comprising:

• a lid surface having a peripheral sealing skirt for attachment of the lid to the rim of a beverage container;
• a foldable flap formed in the lid by a pair of tear lines which are formed in the lid surface and extend radially outward from a hinge line to include a section of said sealing skirt and having ends displaced from said tear lines;
• a recess formed in the lid surface and including two vertical side faces extending radially inward from the hinge line and a vertical end face extending between the side faces opposite the hinge line, whereby the foldable flap may be opened along the hinge line and inserted into the recess to allow access to the contents of the container, wherein the recess has a depth which increases in the direction away from the hinge line to a depth substantially equal to the height of the peripheral sealing skirt so that the foldable flap can lie substantially within the recess;
• and
• at least one detent formed from each vertical side face for securing the opposite sides of the foldable flap when it is inserted into the recess and at least one transverse detent formed along the vertical end face of the recess for securing the sealing skirt of the foldable flap when it is inserted into the recess, wherein the sealing skirt of the foldable flap includes an indentation which mates with the transverse detent when the foldable flap is inserted into the recess.