The waist belt is identical in both models, too – it is soft, quite wide and horizontally sewn-through. In the all-buckle model, it was quite uncomfortable for me, to be honest, mainly because of its tendency to bend in its upper part. However, I was pleasantly surprised about the Half Buckle’s waist belt – it did not bend and it felt a little bit more firm overall – possibly because of the carrier being less worn than the all-buckle one? I do not really know the reason, I would have to have both carriers in my hands at the same time. Maybe also the construction the Half Buckle carrier in which the wide shoulder straps also hold the baby’s bum (and not only the back panel) play its role… Well, these are only my thoughts and impressions – however I really liked the waist belt of this model and it was very comfortable for me.