Flak Sack is a drawstring backpack that gives your belongings the same protection used in bullet-resistant vests, thanks to the Spectra fibre-technology created by Honeywell. It is water-, bullet- and slash-resistant, not to mention glow-in-the-dark. It also has radio-frequency identification (RFID) blocking material, a heavy-duty brass and steel lock, and steel-reinforced nylon straps, making theft near-impossible. $149; loctote.com