Filson Rugged Twill Large Briefcase/Computer Bag is nearly indestructible. This rugged twill case provides solid protection for your laptop computer and accessories. Inside is a wide center carrying compartment plus two full-length open pockets. A panel sewn onto one open pocket is large enough for a laptop computer. More pockets hold battery pack, diskettes, calculator, business cards, pens pencils and notebooks. Made of 100% cotton twill and impregnated with Filson's paraffin based Oil Finish for an extra tough, water repellent bag. You won't need to worry about your electronics if you get caught in the rain.* Clean by wiping and brushing only -- gains character with use.