Make the most of what you ship with FiberCraft® EF. Its polyester fiber scrim makes it tear resistant, and its moisture resistance keeps envelopes well intact in wet and humid conditions. What makes FiberCraft EF one-of-a-kind is its unique use of recycled materials; 76% of FiberCraft EF is composed of recycled paper content, 68% of which includes post consumer office paper and packaging waste. Make the most of your environmental resources and ship with FiberCraft EF, your recycled, durable shipping option.