Designed to fit inside the larger PC II Porter Case II wheeled carryon, or it can be attached to the outside with the Hook/Accessory Strap. A padded shoulder strap is included. The Soft Computer Bag is the ideal solution for those times when you don't want to roll your Porter Case. Use the hard-side Porter Case to help transport and protect your soft case. Then, when you get to your destination it is ready to pull out of your Porter Case and slip over your shoulder. You arrive refreshed and ready for that important meeting.