These popular glass storage containers are 40% off: 'I like them more than my Pyrex'

If you're a fan of leftovers, good for you for not letting perfectly good grub go to waste. But we're also willing to bet you have a cabinet full of stained, mismatched plastic containers that make packing up said leftovers quite the chore. Well, it might be time for a little upgrade. Thousands of Amazon shoppers love these sturdy, glass JoyJolt JoyFul Food Storage Containers, which have airtight seals to keep food fresh. And now this 24-piece set is only $40 (down from $70).  

Why is it a good deal?