Trekking Carry Bag - 40 L to 60 L - DUFFEL 500 EXTENDThis "Duffel bag" is designed to carry your belongings during your adventures in the great outdoors. HAND LUGGAGE This bag is accepted as cabin baggage by most airlines. However, we recommend you check the authorised dimensions with your chosen airline. Extend system This duffle bag comes with our Extend system so you can vary the bag's volume. It's a system of straps that free up extra space when loosened. Conversely, it also compresses the bag to