Brand new Aer Travel Pack 4 xpac new without tags The Aer Travel Pack 4 X-Pac 28L is a sleek black nylon backpack designed for travel convenience. With a waterproof construction, this backpack is perfect for protecting your belongings in various weather conditions. The 28L size provides ample space for your items, while the laptop compartment offers secure storage for your electronic devices. The unisex design makes it suitable for anyone looking for a practical and durable backpack for their travel needs.