karrimor SF karrimor SF small Utility Pouch Material: KS100e This 1000-denier nylon fabric is coated with silicone/PU elastomer, providing excellent tear strength and folding durability. It ensures durable water resistance. ■ Fiber Thickness Nylon fibers used in recent mountaineering backpacks are typically around 420 denier for 30-liter class backpacks. However, karrimor SF uses thicker fibers, offering high durability to meet military needs. The zipper pulls are customized with compression tubing.