The Guardian Anti-theft Backpack is great for traveling and theme parks. It opens in the back which when wearing is against your back so no one can get into your goodies. The lining is a waterproof canvas that has a zippered pocket, a slip pocket, and a built in credit card slot. The exterior has 2 side pockets for a water bottle, cell or sunglasses. There’s 3 strap options for use. A grab handle, a shoulder strap and of course the backpack straps.