A reclosable bag, comprising: a bag portion defining a bag interior and a bag opening, a means for opening and closing the bag opening, the means comprising (i) opposed interlocking features along the bag opening, the interlocking features being sized and shaped to form a seal when engaged, and (ii) a slider in the bag opening, between the opposed interlocking features, to engage and disengage the interlocking features as the slider moves, the slider being further configured to seal the bag opening when positioned at one end of the bag opening, a passageway in the slider, to provide access between the bag interior and an area outside of the bag, and a means for selectively opening and closing the passageway, wherein, upon moving the slider to the end of the bag opening and sealing the bag opening, access may be selectively provided between the bag interior and the area outside of the bag through the passageway.