I almost fell over laughing when I opened the pack of Flip disposable inserts. If your school used antique sex ed materials you might too. Back in the 70's, before adhesive was added to menstral pads, you used to use a belt and suspenders to hold on your gigantic pads. The Flip disposables look just like an old maxi pad. I guess that is what they are but I seriously cracked up picturing my son in his menstral belt.
"We must, we must, we must increase our busts!" I understand the book has been updated to remove the pad belt since dinosaurs roamed the earth and I was a child.