Features:

• The versatility of Pyrex glassware extends to storage dishes in an array of convenient.
• Stackable sizes with plastic lids for safe-keeping.
• Perfect for reheating and serving.
• Resistant to both heat and cold.
• Compared to the plastic counterparts, Pyrex glassware storage dishes do not stain or retain food colors, tastes or oders.

Rating : - food tastes better
Great sizes. The smaller ones are sort of big enough to store 4 butter sticks. I Haven't used the big one yet, but it is great when I make 4 meals of home-made pasta sauce to freeze.