I am beyond pleased with these! As someone who wants to do better for the Earth, I haven't actually used Ziploc bags for years, but I was previously only relying on leftover jars and glass food containers for storage. But those are prone to breaking, and don't necessarily travel well because of their weight and bulkiness. Enter Stasher bags! I CANNOT believe how durable and leak-proof they are. Even my boyfriend was amazed to hold them upside down full with water and see that not a drop came out. They're also great for storing cut vegetables and keeping them fresh, like when we only use half an onion at a time. And so easy to clean! I can't wait to get more of all of the sizes... and convince my friends to do the same.