The next generation of our Alchemist Pack takes its cues from the award-winning Sorcerer, with a more streamlined design, lighter weight, and improved shoulder straps and waist belt for less bulk and better weight distribution. Rugged, weather-resistant 630-denier nylon TPU stands up to the most demanding use and terrain. Patented full pack expansion with integrated pullout lid lets you quickly adjust to the size of your load, from 40L to 55L.Eddie Bauer First Ascent is a comprehensive collection of premium, technical outdoor products for all mountain experiences, informed by over 100 years of product development and design expertise.