This Pack of 3 Artist Quality Bamboo Grip Guitar Picks is recommended for acoustic and acoustic electric guitar. These picks feature a thumb impression and finger groove to give you the best grip of your life. Our Bamboo is golden brown and dark brown with a thin, straight grain and a matte luster. Bamboo is a medium hard wood and is appropriate for increasing modulation and creating a bright tone on both acoustic and acoustic electric guitars and ukuleles. Bamboo produces a crisp and loud overall range. Bamboo, known for its use in instrument reeds, as well as other non musical purposes, provides a useful pick material for certain purposes such as increasing the overall volume and creating a loud plucking sound when not amplified. Bamboo is one of the most sustainable woods in the world. 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".