Cactus Picks are currently available in 3 gauges: Light (.50mm), Medium (.75mm), and Heavy (1.00mm)
Your strings want a slippery, smooth guitar pick. Your fingers don't.
The material we use, Dupont Delrin 500, is very slick; it is self-lubricating so it resists dirt & sweat. It slides across your strings with very little pick noise and resistance.
We add Cactus Spikes to our picks so that when you hold it, it stays. You've felt other "grip" picks but these are much more aggressive than any other pick ever made. A small percentage of our customers find them "too grippy" and file the spikes down with an emory board. Feel our picks one time and all other picks will feel smooth.