These picks offer the playability and sound of Tortex with a super sharp tip for added precision and articulation. The long history: Tortex picks were introduced in 1981 and were originally intended as a high-quality substitute for tortoiseshell. However, Jim Dunlop's groundbreaking creation evolved into much more: it established itself as a standalone brand and became the new standard for all other picks. Building on the precision, consistency, and color-coded gauge system he introduced with nylon picks, Jim decided to develop a pick with a clear and crisp attack, superior memory effect, high durability, and improved grip. He chose Delrin as the base material and spent over a year developing a special treatment process to unlock its full potential. This treatment process distinguishes Tortex picks from all others, providing their unique, grippy, matte surface and aggressive attack. Ultimately, Jim expanded the color-coded gauge system of his previous picks and created the clear and timeless range that has become the industry standard. Staying true to Jim's original formula, Tortex picks remain our best-selling pick line. And we still produce them at the Dunlop headquarters in Benicia, California. With Tortex, Jim Dunlop started a revolution, and the world of picks has never been the same. The tortoise logo is instantly recognizable, and the vibrant Tortex colors have become a benchmark for guitarists. Walk into a music store and ask for green or yellow picks – you will likely be offered Tortex picks in gauges of 0.88 mm or 0.73 mm. Countless musicians worldwide, from every genre and playing style, have chosen Tortex picks to pursue their passion. Made in the USA.