The durable 1680 denier ballistic nylon affords superior protection while the intelligent design of the pack maximizes ergonomic comfort. Contour-adjustable lumbar support minimizes fatigue as it shifts weight onto your hips. Inside a SnugFit compartment holds and protects your laptop while you re on-the-go. Your computer and other contents can easily be accessed. You can keep critical items in the front pocket and have quick access when you need to get to them. For convenience the pack features an expandable bottle holder and headphone port for uninterrupted use of your MP3 player. The padded contoured shoulder straps ease neck and shoulder pain. Meanwhile the top handle doubles as a strap which is handy if you need to hang the pack from a wheeled bag while traveling.