Great product, I am using it to pack hemp flowers and keep them in cold storage. The bags keep my product fresh.They are strong and you can boil in them. I tested by putting a 10 lb kettle bell weight in in and boiling for 5 minutes and then shaking it. It didn't stress it at all. Awesome bagsI use these to keep stuff in and the yre amazing, I'm cold or heat, waterproof, smell doesn't get out or in, the yre big tooawesomeOrdered these bags to cook various main and side dishes inside a full-sized foil pan. Added food, sealed bag, cooked and transported beautifully!!!No spills, no leaks, just worked as expected.