Make the most of POP Containers with all-new POP Accessories; seven solution-based tools that attach neatly to the underside of Container lids The OXO POP Brown Sugar Saver is a food-safe terracotta disk that keeps brown sugar soft and fresh The Brown Sugar Saver can be reused as needed, simply soak disk again when brown sugar begins to harden, do not wash with soap Recommended for use with the 1.1 Qt / 1.0 L POP Container, sized for 1 lb of brown sugar, and the 1.7 Qt / 1.6 L POP Container, sized for 2 lbs of brown sugar; also fits POP Containers with lid type: A, B, C, D, E BPA free Only attaches to POP lids with circular holders on the underside