We're sorry to hear that our Ziploc® Freezer Bags did not prevent freezer burn like we'd expect. For best use, we recommend ensuring that each bag is fully sealed so no air was able to reach the food. As this didn't meet our standards, we'd like to assist further. To do so, give us a call at 1-800-558-5252 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number: 22721886. We look forward to your call. – Megan, SC Johnson Consumer Care