Stoppers on either side of dish keep butter in place while cutting. Convenient tablespoon measurement markings. Clear lid rests on dish without sliding off during transport and is easy to remove. Dish designed to keep butter from slipping off tray and dirtying lid. Accommodates all short and long 4 oz butter sticks. Soft comfortable non-slip grips. Durable body and lid are dishwasher safe. BPA free.