Check out this cool  Portal 2 Aperture Laboratories Messenger Bag below. It is great for any Portal fans. It comes in bright orange, white, grey and black colors.  The size is approx. 22 x 13 x 3 inches. It has ergonomic shoulder strap and magnetic closure. It has front pocket for small items, pen holders slot, Velcro sealed cell phone pocket. Cool backpack for school or university. Perfect for any Portal fans collection.