The lightweight backpack of your dreams is here. Meet the versatile pack that hauls it all. The Sierra Designs Flex Capacitor 60-80L is a beast of a backpacking pack, constructed from durable nylon for rough conditions in the backwoods and built with adjustability in mind. Loosen the expanding horizontal gussets for an additional 15-20L of cargo capacity on longer backpacking trips, or cinch it tight for smaller, compact loads on fast summit days. Plus, ample quick-stash solutions on the straps, sides and bucket lid ensure there are plenty of places to store your mid-trail essentials. However, you pack it, the Y-Flex suspension adds support so this lightweight backpacking pack can punch well above its weight class.