I have 2 but am yet to try them. I have no idea how they work lol you seem to need a degree to know which snap goes where. I should have gotten a demo from the baby expo today! Tbh I haven't tried any of the osfm on a new bub. I didn't start with Em til she was 4 months. I have Bum Gs and cushie tushies from em that I'll try with the new bub plus the tutto. I've heard none of the osfm are ideal for new borns.