Aquila Bionylon AQ-58 Soprano Ukulele Strings - Low G - Set of 4 Strings<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> The first eco-friendly ukulele string， exclusively from Aquila </span></li><li><span class="a-list-item"> Plant-derived from castor oil–100% natural components </span></li><li><span class="a-list-item"> Manufacturing process reduces CO2 emissions more than 50% </span></li><li><span class="a-list-item"> Smooth playing surface， warm and mellow tone </span></li><li><span class="a-list-item"> To learn more， please see our Product Description below </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/61g0PhbjfBL.jpg" noproxy>