I don't know if they're 3.0 or 4.0.
They don't have double gussets.
They are not the newborn size (although I did use them briefly on my newborn by using the shortest rise and crossing over the snaps).
Ashley, Catholic Mama to Layla (10), Olivia (5), Isabel (3) and Nora (2) and Ransom (EDD 2/25/14)! Wife to my HS Sweetheart Jason