With a classic top-loading design and plenty of room for long weekend trips, the Explorer 55 pack is a great deal for those on a budget ERGO-FIT shoulder harness system is designed to maximize comfort through easy adjustment. Two aluminum stays help support heavy loads by focusing weight to the hipbelt. Top lid features a pocket for easy storage of trail necessities lid and expandable collar can be adjusted to allow for bulky loads. Shoulder straps, waistbelt and backpanel utilize Vapel mesh for wicking performance Airflow channels on backpanel aid air circulation. Externally accessible compartment accommodates a wide variety of sleeping bags. Front flap pocket accommodates a shovel or other bulky gear. Daisy chains, ice-axe loops and lash tabs let you strap on extras to the outside of the pack. Built-in raincover has its own storage pocket on the bottom for quick, convenient access. Removable media pocket on shoulder strap allows easy access to your gadgets holds a variety of GPS units, digital cameras or two-way radios. Side compression straps let you cinch down both large and small loads for increased stability. Two mesh side pockets keep water bottles within easy reach. Special buy.