Mystery Ranch Coulee 20L Backpack with Women's Suspension Fully Featured which will help all our day trips go without a hitch. Micro-adjustable Lightweight Trail yoke and straps load adjustable allow us to find the perfect fit and perfect stability for working on hilly terrain. We love the hydration-compatible inner sleeve and the durability Eco-friendly design, but our favorite feature may be is a convenient opening with three zippers: the top is opened with a quick-release lid with two zippers and an additional zipper in the center. backpack expands the main compartment for easy access to equipment.