Copic Markers Multiliner 0.5 Cobalt Pigment Based Ink<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Pigment-based ink </span></li><li><span class="a-list-item"> Waterproof &amp; archival </span></li><li><span class="a-list-item"> Same high-quality ink and nib as our mulitliner sp's </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31GeBR44a1L.jpg" noproxy>