DESC: The Exos 46 is the ultimate thru hike and super lightweight backpack, thanks to our Air Speed Suspension, which teams a 6061-T6 Aluminum frame with a 3D tensioned mesh back panel, and side crescent ventilation. The Air Speed suspension works in tandem with the supportive and ventilated Bio-Stretch harness and hip belt for fit and comfort unheard of in a one kilo pack. Single vertical zippered front pocket, Single tool attachment.