A bag may include first, second, and side walls that each extend from a bottom wall of the bag to an upper end of the bag. The bag may also include a reusable fastener including a first fastener part mounted to the first wall and a second fastener part mounted to the second wall. The releasable fastener may be a hook-and-loop fastener, which may continue to function when exposed to particulate matter of the product. The upper end may be configurable between a first closed configuration wherein the first wall is secured to the second wall, a second closed configuration wherein the first fastener part is fastened to the second fastener part, and an open configuration wherein the first wall is at least partially separated from the second wall. In the open configuration, a pour spout may be formed in side upper marginal portion of the bag.
