Materials, plainly
- Lids and plastic vessels: BPA-free polypropylene, microwave safe and top-rack dishwasher safe.
- Glass vessels: tempered soda-lime glass from the Pyrex production line, oven safe with the lid off.
- Gaskets: food-grade silicone, removable for cleaning and replaceable on their own.
- Latches: living-hinge polypropylene, cycle-tested far past what a kitchen will ask of them.
What the warranty covers
The limited lifetime warranty covers latches that stop holding and vessels that fail in normal kitchen use. It does not cover a latched lid in the microwave or glass moved straight from oven to wet sink, which are the two habits the care notes exist to prevent. Claims run through the contact page and are usually settled with a replacement part.



