Toll I think the Delibakie dog biscuits are packed not only in cardboard boxes, but inside are additionally sealed in a bag. This will keep them fresh longer and crispy and do not absorb moisture.
The heart shape itself is a sweet idea, but remember that dog biscuits from their size and shape her rather to (human) Christmas cookies. For medium and large dogs, the cookies are certainly not a problem, but they could be massive for small breeds to, so you have to destroy them, under certain circumstances, before they are fed.
The ingredients I personally not as critical as some other reviewers here. Finally, there are treats that candy for the dog, he gets as a reward from time to time. Would it be a complete feed for my dog, I would be much more critical, but I'll take the high cereal content or sugar in purchasing. She gets so only now and then one or two cookies and that's it, so they will be of thick nor ill.