These picks are superb. They are comfortable and grip great for no slip picking and strumming. I've even tried Swiss Picks which are some of the best picks ever but they just are too thick whereas these picks come in paper thin 50mm up to pretty thick. I prefer a thinner pick so Swiss don't work as well as these. I got the 50mm and 60mm and they have cool colors also.
ProsGrip is the best on the market, comfortable and ergonomic for easy use and a good variety of materials like nylon, delrin and rubber not to mention clear and glow in the dark.
ConsNot any cons as far as I can tell