3D Vent Mesh: Ridged EVA foam with molded air channels accompanied by an overlay of lightweight recycled triangle wall mesh will keep your back cool by enabling optimal airflow. Dual Adjust Sternum Strap: Easily adjustable straps give you a custom, comfortable, and secure fit for the journey ahead. Fuel and Gear Storage: Spacious main compartment designed to house all of your gear, hydration, and essentials. Stretch Overflow Pocket: Secure outer pocket for any last minute extras, like a rain jacket, shoes, and more. Trekking Pole Attachment: Easily attach and remove poles when needed › See more product details