I get a lot of questions about sizing - and sometimes it can be hard to say what size is best. The weigh range is a guideline; the waist, rise, and leg measurements are always a better way to check.
These nappies/diapers are both the same size (small), even though the babies are far from it! AnaSofia (aka Poppyseed) is almost 23 months old, and about 26 pounds; EmiRose is almost 8 weeks old, and about 10 pounds.
I actually can't believe Ana cam still fit into the smalls. Holden outgrew the smalls by 3 months old, at about 15 pounds. He had chubbier legs by far.
Emi is just starting to fit into the M/L size that Ana wears