Custom Printed SOS Bags

SOS Paper Bags - Kraft, White, Colors & Hardware Style - Custom Printed. In 1883, Charles Stilwell patented a machine that made square-bottom paper bags with pleated sides, making them easier to fold and store. This style of bag came to be known as the S.O.S., or "Self-Opening Sack". Widely used in restaurants, bakeries, pharmacies, delis, dentists and more.