We are so confident that you will love our foods that we offer this incredible money back guarantee: Try our foods for a week. If you do not like them for any reason, simply call 1-800-321-THIN® within seven days of receipt of your first order and return the three remaining weeks of food, and we will give you a full refund of your purchase price, less shipping. Nutrisystem® Select™ Program customers must return two weeks of non-frozen foods only. Frozen food items are not returnable. Nutrisystem Flex Program customers must return 15 days of food. This money back guarantee applies to first time program orders only (including Core, Select and Flex). A la carte items and weekly orders are not included. Please refer to our refund policy for these items.