Comments about 3M� Post-it� Flag 1x1-3/4 2-Pack; Bright Blue:
I use Post-It 1" Flags to mark the beginning of chapters in large, unwieldy Teacher's Editions. They stand up to constant use, are flexible enough to withstand being put in my book bag along with other materials and have never needed replacing in the books where they have been used. I have used Sharpie markers to note which chapter the Post-It Flag is 'flagging' and have placed them in the book diagonally along the top edge, so that I can find the chapter number easily.
Bottom Line Yes, I would recommend this to a friend