The plastic edges of the armband are quite hard and scratch my skin

phone fits and it does not slide on the arm, one edge is really rough and scraps the skin, otherwise I would purchase it again.

This armband works like expected however the edges of the velcro on the inside of the armband are rough

The flap that opens in the back to insert your phone has rigid edges and rub and rub against your skin as you run

The cut edge of the fabric lays against your skin on the top and bottom edge, and while not immediately uncomfortable, I found that with long runs and walks this really bothered my skin