Drop and Twist Refills Thermal Food Container (4 Pack), 16 oz, Clear The Drop and Twist is a thermal food storage solution that makes packing your kid's lunch easier than ever The 3-wall thermal (with insert) design keeps foods hot (or cold!) while the BPA-free inserts are freezer, microwave and dishwasher safe A unique wide-mouth rim is easy to clean and sanitize The tall tumbler insert not only takes up less space, but re-heats faster in the microwave and the stopper lid pops off when heated, making it easier to handle Great for families on the go or for easy portion control | Dimensions: 3.75" X 6.5" X 3.75" | 16oz capacity | Has been recognized and awarded the Parent Tested Parent Approved (PTPA) seal of approval