The Isara Baby Carrier, made of organic cotton, has a sturdy but not thick waistband and crossable straps that can be worn rucksack style. The panel height and width can be adjusted to fit your child, and the carrier can be used on the front, hip and back.
Can be used for children from 4 weeks to toddlerhood. It is approved for up to 20kg.
The instructions for use are here
There are more videos listed on the Sling Surgery main website.
The Sheffield Sling Surgery website is here - full of useful information about safety, all sorts of articles about warm/cold weather carrying. knee to knee support, big kid carrying and so on (direct link here) and a post about how to choose a sling here
The library drop in dates link is here and you can also book some personal help here.
Facebook page is here and the online support group the Virtual Sling Surgery is here