Abstract: An improved stand-up pouch and blank for constructing the same. The stand-up pouch comprises a front panel, a back panel, and a bottom gusset provide between the front panel and the back panel. The bottom side of each panel may comprise a left curved section and a right curved section. The front panel, back panel, and bottom gusset are sealed to one another such that the stand-up pouch is configured to move between a substantially flat state and a stand-up state. According to some aspects, the stand-up pouch is configured such that, when in the stand-up state, a portion of the pouch where the left curved sections of the bottom sides of each panel are sealed together and a portion of the pouch where the right curved sections of the bottom sides of each panel are sealed together do not contact a support surface, thus providing increased stability.