For collector magazine archiving something sturdier is really needed - these won't tear but really can't support the weight of a magazine. The bigger issue for me though was their size. This 8.5"x11" size works fine if you have very few pages (e.g. 1 to 5) but the description says it can hold up to 70 pages and for a magazine at about that number of pages the protectors are not tall enough - they stick out of the top of the protector by at about a quarter inch. Similar Avery products have similar issues. Going back to using C-Line heavyweight multi-page protectors - tried Avery & Staples brands because they were cheaper.
I use these sheet protectors for class instructions that I use on a regular basis. It keeps them protected (obviously) and ready to go for each class. Works perfectly!