These are the MOST frustrating protectors to open and to insert the sheet(s). The opening is almost crimped shut. A HUGE amount of time is wasted to get the top open and then you must slide your hand into the sleeve to break the static. The width of the protector is slim so the sheets don't slide easily into the protector. The material quality is OK. I would not recommend these unless you have great patience and lots of time to waste.