Abstract: A portable fluid container with an integrated straw. The container includes a vessel for containing a beverage; a straw having a lumen through which the beverage may flow; an orifice in the vessel configured to accept the straw such that an interior portion of the straw is inside the vessel and an exterior portion of the straw is outside of the vessel; and fastening means for removably maintaining the exterior portion of the straw in a folded position along a first fold to prevent the flow of the beverage through the lumen of the straw. The beverage may flow through the lumen of the straw when the exterior portion of the straw is unfolded along the first fold.