OXO Good Grips Smart Seal Plastic Food Storage Containers are BPA-free and made for meal prep, storing leftovers and bringing food on the go. Thoughtfully engineered lids come equipped with a leakproof, spillproof and worry-proof silicone seal that's easily removable for cleaning, plus four locking tabs to keep food secure. Smart Seal containers stack neatly in your fridge and nest in your cupboard while not in use.