I have a few Panatime straps and I've always found them to be a good value. One thing I hate about them, however, is the sealant that runs along the edges of the strap. It just looks tacky. I've been thinking about taking some sandpaper to them to impart an "unfinished" edge. What do you think? Will I screw anything up? Any specific techniques, or will sandpaper and elbow grease be enough?