OXO POP Brown Sugar Keeper is designed to keep brown sugar soft and fresh, ensuring your baking ingredients are ready to use. This food-safe terracotta disk is reusable and works ly with POP containers. To use, simply soak the Keeper for 15 minutes, pat it dry, and then secure it to the underside of the POP container lid. Re-soak as necessary to maintain freshness and prevent your brown sugar from hardening, making it an essential tool for any kitchen. Model Number: