From birth with a newborn insert (or 4 months) to approx 36 month
Options: parent facing, hip carry, back carry.
Straps: All buckles, H style shoulder straps,crossed straps
Some people like this for:
Nosy babies, hip carries, sharing with another adult. Easy to narrow and widen. Simple design.
Some people don't like this:
They can be hard to fold, long shoulder straps are not always the best fit for back carries if you're petite.
Buckles/webbing may put pressure on adults breast tissue in the early days.
The panel is often outgrown before baby reaches the maximum weight.
Instructions can be found here:https://ergobaby.co.uk/instructions#Adapt