Use: The set I had got used a lot, Mostly for practicing and small gigs. I wasn't really that impressed with them, They didn't so much slip out of my hand as they did make it feel uncomfortable. They way they were all kept together actually cut my hands a few times to the point I took a nail file to them. They also felt quite cheap (Not that I can complain for the price) but they felt brittle, nearly as if they'd break. I only play Dunlop picks at thickness 1 mm and .73mm and I was quite disappointed by these picks. I suppose they'd be okay if it was just for sitting at home sitting down jamming away but not if you're on stage and have to hold them uncomfortably (in case they fell or because of the top of them cutting your hands) Either way they helped me out when I needed them so my opinion is pretty neutral. Some people might love them, I however would much prefer maxi grips of gator grips
I decided to try these. I usually use Tortex .73 and although these are the same thickness, they feel, play and sound very differently. These are made from nylon and are very good however, I do prefer Tortex Plectrums. Love the packaging!