The pack itself is constructed of a laminate of heavy-duty nylon, ¼" closed-cell foam padding, semi-rigid polyethylene board, and a smooth nylon interior. The upper compartment holds the radio, and the lower one can hold the beefy 12V, 8 amp hour WorldPack Power Kit, offered as an option by PowerPort. This power kit gives you more than 3 times the power (and at a full 12V) than the auxiliary battery pack offered by ICOM for the IC-706 and IC-703.
The backpack's compartments have double protection against the weather and dirt: rain-flapped zippers and an interior waterproof nylon rain fly with drawstring closure. The lid has a pocket for your microphone, and you also receive a complimentary PowerPort WindSock - a fleece cover for your microphone to attenuate wind noise in your mic.
In addition to all of these great features, there are two antenna pockets on the sides with a full length nylon support sleeve on one side and adjustable Velcro straps on the other to hold and support mobile antennas such as the ATX Walkabout (offered on our site) ensuring that your antenna is up and at the ready, and there is the minimum stress on the antenna/radio connection while mobile.
The lid has a pocket for microphone storage and numerous tie-down points allow you to carry plenty of extra gear. The shoulder straps are comfortable, well ventilated mesh, with webbing cross straps to hold HT's, GPS units, or other handheld devices.