The Dava Grip Tip Picks feel like having access to multiple gauge thickness plectrums all in one. They have a flexible centre section where the pick is held, grip the pick near the tip and it acts like a heavy gauge for tight picking control, adjusting your grip towards the back of the pick, releasing the centre section gives a light gauge flexible pick for strumming and rhythm playing. The combo pack is made up of 2 x Delrin, 2 x Nylon, 2 x Poly Gels to get a feel for the different materials and they have a grippy rubber layer over the top for ultimate control.