Plastic hoop on toe strap digs into foot. Seems to be sewn with monofiliment type thread- the cut ends stabbed me and had to be trimmed close to the strap.  Plastic buckle at ankle digs in sometimes.  My last pair from Rafters had velcro at the ankle and no hoop at the toe.  They were great until the glue started failing. I just reglued them with Goop today.