Favored by ultralight backpackers, packrafters, and alpinists alike, the 4400 Porter Backpack is Hyperlite Mountain Gear's largest and most minimalist pack for week-long adventures. With a 70L capacity, the Porter has enough space for weeks on rivers or in the alpine. Hyperlite Mountain Gear made this pack out of the same Dyneema fabric used in climbing gear for long-lasting durability without the weight. Unique to Hyperlite Mountan Gear, the Porter's Dyneema Hardline suspension system lines the shoulder straps, waist belt, and back panel in foam padding and spacer mesh for breathable comfort, and there's an internal framesheet as well as removable aluminum stays for stability when you need it. The Porter has a roll-top closure and taped seams for protection against wet weather and snowy grounds. There are also daisy chain attachments for ice axes and other climbing gear, and zippered pockets for valuables and electronics.