E.gerber 100 Half-backs Standard Comic Size - 7" X 10-1/2"

What is the difference between half back and full back?

Do these work best with the mylite 2 7"x 10.5" bags, or should i use the half-back 6.75"x 10.5" boards? i want a perfect fit, not too tight or loose.

Does e.gerber 100 half-backs standard comic size - 7” x 10-1 fit mylites 2 mil comic book standard size 7 1/4" x 10 1/2" plus 1-1/2" flap pack of 50?