The molle webbing throughout the exterior gives you plenty of area for customization along with the shock cord on the bottom for strapping in gear such as blankets, rain gear or jackets. Inside you'll find zippered mesh pockets on each side and a hydration bladder pocket with toggles to secure. Arched framing design and mesh back panel which allows for excellent airflow and comfort. The thick padding in the lower back area of this backpack works very well when using the waist straps.