Instruct: Classify a review as either positive or negative.
Query: leak easily

It's happened a couple of times that these bags leaked while thawing. I am extremely careful with them as the milk is too precious to spill so it's not carelessness. Bags have even leaked just sitting in the fridge, in a plastic container. I now put every milk bag into a ziploc bag for 'safety'. I don't trust these bags anymore and will only use the first years bags, they have proven to be much sturdier so far and are more acurate in the ounces.