I think Slomo and other responders have very accurately described them. I like them because they're cheaper than the premium, AB/DL diapers. They're also easy for me to put on, though you have to tape them where you want the tapes, the first time. They don't have leak guards as others have said and they don't hold quantity like even an Abena M4, others which I have, but I think they're a lot of fun to wear. Like all diapers, you have to decide what you want your diaper to provide for you. For me, they're a fun diaper, and sometimes I'll wear the kind of clothing I don't mind leaking into.
Obviously if you are wearing these to work, you don't want to leak, so you don't want to stretch their capacity beyond peeing twice, imo.