Enjoy low-odor markers that are ACMI certified and conform to ASTM D4236, meaning they’ve been independently tested and meet strict safety standards for art materials Water resistant and wear resistant ink dries quickly when applied and is designed to endure harsh conditions 12 assorted markers in 8 colors (3 black markers, 2 red markers, 2 blue markers, 1 green marker, 1 brown marker, 1 yellow marker, 1 purple marker, 1 orange marker) Durable chisel tip markers let you control your line width to write in various sizes Write smoothly on almost any surface with these assorted markers including cardboard boxes, PVC pipes, concrete walls, plastic bins and more