The pick used by top musicians worldwide. Tortex picks are carefully designed and manufactured to give the characteristic maximum memory and minimum wear that made original tortoise shell famous. First released; 1981, Tortex, Picks were originally intended; be; high quality replacement for tortoiseshell. Jim Dunlop's trail-blazing creation became; much more than that, however, establishing its own identity and becoming the new standard; which all other picks are judged. Building; the precision, consistency, and color-coded gauge system; introduced with Nylon Picks, Jim resolved; create; pick with; bright and snappy attack, superior memory and durability, and; improved grip; chose Delrin; his base material and then spent more than; year developing; special treatment process; draw out its full potential. This treatment process; what sets Tortex Picks apart from all others, providing their unique grip-enhancing matte surface and aggressive attack. Finally, Jim expanded; his previous picks color-coded gauge system; create the bright and timeless palette that has become; industry standard. Because; stick; Jim's original formula, Tortex Picks remain our bestselling pick line. And; still make them; the Dunlop; in Benicia, California. With Tortex, Jim Dunlop launched; revolution, and the world; picks has never been the same. The turtle logo; instantly recognizable, and the vibrant Tortex palette has become; gauging shorthand for guitar players; into any music store and ask for Green; Yellow Picks, chances are, youll; shown; pack; Tortex .88mm; .73mm Picks. Countless musicians across the world, representing every genre and playing style, have chosen Tortex Picks; help them; what they love. Made in the USA.