My daughter likes these inserts because she can use the right number of them at a time based on the heaviness or lightness of flow at the time of use.
I ordered a few extra inserts for my Organic Day Pads but was pleasantly surprised that I didn't even need them because this material is ultra absorbent. I used two inserts and I barely bled through one insert on my heaviest day and I wore it all day long. You do need to soak them with an enzyme cleaner immediately after use to prevent staining. I just soaked mine in plain water and although it helped somewhat there was still staining afterwards. It doesn't bother me but wanted to pass the information along to others.