Rifkin’s reusable Trans-Sacs® give users the ability to quickly sort and consolidate documents for shipping through private courier or the United States Postal Service. This generates significant annual savings on both postage and paper envelopes. The bags also have a built-in window to hold a reversible address tag. This helps reduce processing time and facilitates faster returns to a centralized mail room. Rifkin Trans-Sacs® are manufactured from lightweight, water resistant fabric that can withstand hundreds of round-trip deliveries. These bags are available in a large variety of sizes and colors and can be further personalized with custom imprinting. Several styles are also offered with patented Keyless Security™ closures