Can be replaced only with an industrial sewing machine.
- Unpick the belt stitching behind the strap with nail scissors.
- Remove the belt from the bag on the same side of the bag: Unpick the cross-stitching with nail scissors from the outer side of the bag.
- Remove the faulty plastic strap and thread in the new folding buckle.
- Sew the belt on to the bag using cross-stitch.
- Resew the belt behind the strap.
- Belt up and you’re done!