Half photo bag. Half cargo bag. Half 15-inch laptop bag. The mathematically enigmatic Sinking Barge backpack lets you carry all manner of must-haves and nice-to-haves with minimum fuss, maximum comfort and optimum protection. Supplied with three shape-shifting snake walls, the bag’s 15-litre capacity is sufficient to hold and hug either a video cam or compact DLSR with twin lens kit, plus accessories, and still have room for your Vegemite sandwiches.