For all collectors of 45s where simply to protect your vinyl found in your attic, these bags are very satisfactory. Qualities: Brilliant and clear pockets which are well worth the covers of your old cardboard EP or SP your papers. Strong enough provided you do not get shot. Quite suitable for the size 45s and therefore no difficulty for them. They protect well. Faults: I would have preferred more rigid pockets. This batch of 50 in my case is not enough but I guess there are lots of 100, 200 or 300. Pretty slippery. They tend especially if you put them side by side in a disk library, separate from the original cover as soon as one takes it but it's not my case since they are in bins in record stores as . In short it is still a great product that can well keep the vinyls. I recommend it. Adanson Marco.