This is a buckle carrier, although unlike other buckle carriers it doesn't have any padding, which makes it very light and cool and doesn't take much space at all in a bag. It is very easy to use so it appeals to most people who are new to baby wearing. It can be used from newborn from 3.2Kg up to around 18 months (tested to 15Kg). The panel can be reduced for a newborn baby and the size can be changed using some velcro in the waistband. It can be used for back carries too and forward facing (although this is only recommended once baby can hold their head well and for short periods of time).
How to video
Leighton Buzzard & District NCT Sling Library
https://www.facebook.com/LBslinglibrary/
https://www.facebook.com/LBslinglibrary/