This carrier is in great (barely used?) condition. The BabyBjorn We (Cotton) has a waistband and a wide base to support thighs and hips, and a zippable integrated insert to provide more height to smaller babies.
It states child weight ranges from 3.5 – 15kg and offers front carries (facing you) and (once child can sit unaided) back carries.
It’s not currently on sale directly from BabyBjorn, but this carrier is dated at 2015, so it’s actually not that old! You can see more about the difference between BabyBjorn’s here (where they cover details about the We): https://www.babybjorn.co.uk/faq/