if your baby is average in size
NB 100 ( I bought Pampers sensitive 96 + 40 pieces from hospital)
Size 1 (200, my son used more than 200, but you can start from there, I got
Pampers Sensitive 180, I think from size one you don't need sensitive
anymore, just get the regular swaddler)
He is still on size 2, outgrowing soon, you don't need to stock on size 2,
you can wait for deals.