A nice matte finish gives these a good hold. Over time, they do wear smooth, but they hold up very well. I've had them for months and have yet to throw a pick away from overuse, though I do have other picks I use depending on what I'm playing. Thickness is exactly as advertised. They are heavy and thick and like all thick picks, they really bring tone out of the strings. Very good for picking or getting volume out of an acoustic. Really well made product and I wouldn't hesitate to recommend them very highly to those seeking a thicker (1.0 mm) pick.