BC Vest doubles the ability with a hidden backpack. Designed by Dakine the BC Vest weighs less than two pounds when empty. The built-in backpack feature many pockets and enough size to keep the small accessories like trekking gear, cloths, cameras/gadgets, first-aid kit and even lunch. The bag stays hidden on the back and when required, can be unpacked within seconds. Availability of this adventurous vest is not known so far but after so much appreciation over the design we hope that company will make it available soon.