A comfortable way to transport notebooks up to 17". Contour adjustable lumbar support panel reduces fatigue by shifting weight onto hips. Padded, contoured shoulder straps. Flap-free for quick access to contents. Handle doubles as strap to hang backpack from wheeled case (not included). Expandable bottle holster and headphone port for MP3 player. 1680 Denier ballistic nylon. 15-3/4w x 9d x 19-1/2h.