This 10 piece BPA free storage set is easy to use and keeps leftovers fresh for days. There are 5 nesting rectangular containers each with a snap on lid that is easy to attach and remove. The lids have been leakproof so far and the pieces are dishwasher safe and freezer safe as well! I've been trying to get away from Tupperware and get all matching sets and this is my favorite so far, it is sturdy like my glass set and lightweight. This was a great purchase!