This Pack of 3 Artist Quality Tamarind Grip Guitar Picks is recommended for acoustic and electric guitar. These picks feature a thumb impression and finger groove to give you the best grip of your life. Our Tamarind is a dense and medium grained wood of dark and milk chocolate browns and beautiful patterns. Tamarind produces rich tones and is very durable, making it a solid wood for electric guitar. Acoustic guitar players will notice a brighter overall sound without sacrificing the mellow tones so important in acoustic guitar. Tamarind trees have a rich history throughout the ancient and modern world and they are considered lucky. US Blues® offers music accessories made of sustainably sourced exotic materials that improve the tone and modulation of your instrument and therefore your overall playing and enjoyment. We use by-products of various industries, such as guitar making, to source materials that otherwise would not have been repurposed. We strive to bring the quality of your music to a new higher level and are proud to have elevated the guitar pick to the level of "Pick as Instrument".