Find Waterproof oxford large capacity canvas Backpacks in Shopzilla's Clothing & Accessories category: Compare prices of Waterproof oxford large capacity canvas Backpacks and buy your new Waterproof oxford large capacity canvas Backpack at a good price. When buying Backpacks, check how shoppers rated the different online shops. Simply select the store that has the Backpack you're looking for. If a Clothing & Accessories store isn't rated yet it means that Shopzilla is still collecting shopper reviews.