This brilliantly designed lid from Cuppow, allows you to turn any wide-mouth mason jar into a travel thermos. Canning jars are the perfect for drinking on the go- they are easy to clean, durable and inexpensive. The only problem was that they didn’t allow for spill-free sipping on the go. Problem solved with Cuppow! This eco-friendly alternative to disposable cups and pricey travel mugs is well made, recyclable and won’t break the bank!