This equipment backpack is large enough to carry all the equipment of a traditional tool bag. Bag measures 22? H X 15?W at bottom and tapers to 18? W at the top for a large opening. Bag features 8?x15? hard plastic bottom. Front pocket measures 12? x 12? with a 4? gusset, and side pockets measure 10?H x 6?W with 3? gusset. All pockets have hook and loop closures. Bag features padded shoulder straps with adjustable chest strap, zipper with a rain flap to keep water out of bag, and a carry handles at top of bag.