Following their 2014 fall/winter collection, White Mountaineering and Porter team up again on a bag range for 2015 spring/summer. Here, we focus on the collection’s standout piece, the Polyester PVC Big Backpack. Made from a blend of PVC and polyester, the utilitarian piece is rain-resistant and holds a plethora of articles with its bevy of pockets and compartments. Inspired by a classic hiking bag silhouette, zipper-pulls, buckle closure and strap fasteners are other functional features. Check out the White Mountaineering x Porter 2015 spring/summer Polyester PVC Big Backpack here and look for it at White Mountaineering stockists.