Washable ink easily washes off hands, most fabrics and nonporous surfaces making them perfect for young children Extra-broad 5/8" durable chisel tip writes in a variety of line widths Ink won't bleed through most paper types making it great for creating arts & crafts, signs, posters, banners and more Generous water-based ink supply lasts a long time Enjoy low-odor highlighters that are ACMI certified and conform to ASTM D4236, meaning they’ve been independently tested and meet strict safety standards