Briggs & Riley Sympatico Backpack, Black, One Size Lightweight 400D nylon fabric is durable and resists wear, water, dirt and abrasion Adjustable sternum straps to reduce neck and shoulder strain Thickly padded back panel for comfort and lumbar support SpeedThru pocket for quick storage of small items at security checkpoints and contrasting cream-colored lining for easy retrieval Slip-through back panel allows bag to easily slide over the Outsider handle of any Briggs & Riley Upright for fast, convenient travel Pockets: 4 interior slip, 1 interior zip