The Casabella Guac-Lock (also listed as Guaclock) is a plastic storage container made to keep leftover guacamole from browning as quickly as it does in a regular bowl. Fill the clear container, level the surface, lock the lid, then press the unit onto the included elevator base so extra air is pushed out before you close the vent. That airtight setup is also useful for other dips such as hummus, salsa, cocktail sauce, or tzatziki. Capacity is about 12 to 24 ounces. The body is BPA-free, shatterproof plastic that is stain- and odor-resistant; published listings describe it as dishwasher safe. Typical measurements for the container-only version are about 4-3/4 inches by 3-1/2 inches tall.