Our Top Selling Mountaincloth is the best welding shirt on the market. The cloth is a 8.5 oz 100% cotton featuring a tight sateen weave, threads are 2-ply by 2-ply, 216 by 120 thread count per square inch. This material repels the spark better than any shirt on the market, once you try our Mountain Cloth Welding Shirt you will never want to wear another welding shirt. I believe you will find it to be comfortable enough to wear at work or play and durable enough to last. We also offer Flame Retardant Mountain Cloth Welding Shirts.