Lock&Lock Boroseal III, Borosilicate Glass Rectangular, 6-Piece Set/3-Containers Includes a LLG424 (1.8-cup/6.3 x 4.6 x 2.4in), a LLG430 (3.1-cup/7.1 x 5.5 x 2.6in), and a LLG448 (5.8-cup/8.8 x 6.4 x 3.1in) Excellent airtightness with the 4-side locking system keeps food fresh Heat-resistant glass can withstand sudden change in temperature Resists stains and odors for lifetime of clarity Safe for use in microwave and oven (without lid), freezer, refrigerator, and dishwasher