The Ultra+Latch 20 Piece Set offers an assortment of Ultra+Latch containers to provide solutions for everyday food storage needs. The containers feature a color-coded matching system to help find the correct lid and base combination without rummaging through the cupboards. The gaskets and four latches in the lid create an airtight and watertight seal that keeps food fresh and prevents liquids from leaking. All containers store efficiently both when in use and when not in use. All Ultra+Latch containers are freezer, microwave and dishwasher safe, as well as BPA-free and phthalate-free.