Options: parent facing, hip carry, back carry
Straps: Wrap straps, cross straps.
Some people like this for:
Back carries, hip carries, sharing with another adult. Simple design. Versatility, packability, colour, long straps.
Some people don't like this:
They can be hard to fold, long straps can get in the way. No shoulder padding, bit of a learning curve. The panel is often outgrown before baby reaches the maximum weight.