You have to make sure that you buy at least the middle of the road pricing. I thought I would save a few dollars by buying a less expensive brand - I was using them for my Ancestry information. I was working with my Ancestry and the cheaper sheets had separated at the loose-leaf edge along the perforated line. But I bought the brand you were asking about and is wonderful. They don't gather dust and static is less than other plastic products. I would recommend these sheet protectors any time.
I have purchased several hundred of these page protectors-I do ancestry and Ive made family albums with these useful page protectors- Nice to be able to make a thinner album with these. Thank you-please keep making them...