Lock & Lock Storage Systems are the best around! They are heat resistant and airtight, can be used (without lids) in the microwave and oven, and are freezer and dishwasher safe. Lock & Lock Boroseal glass is produced in such a way that is will not shatter and fragment when broken, which is safer for your family. And the snap lock lids create an airtight seal. Try some out, you won't be sorry!
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
BPA Free, lids, and Borosilicate glass
Approximate measurements: (1) 6" diameter x 3" tall; (1) 5" diameter x 2.5" tall; (1) 5" x 5" x 2.5"; (1) 4" x 4" x 2"