A large duffle that’s built for travel and collapses to fit inside a larger tavel bag or roller luggage when not in use. Pack it with you and use at your destination as a lighter-weight pack. When you’re not traveling this is a great daily use bag for the gym, beach, or when you need a bit more space. The Navigator Collapsible Duffle 42L has plenty of room when you need it, and for when you can’t fill the entire bag, compression straps help secure your contents and provide better weight distribution. Pair with the sternum strap even more support. A zipped internal pocket allows space for smaller items and valuables, and when collapsed acts as a quick access pouch. Hook it to any bag with the attachment loop.