Create The Ultimate Brand Mark With Cardwin Rulers and Bookmarks Cardwin Rulers and Bookmarks are the ultimate way to place your brand in front of your customers on a daily basis. And being made from ‘glass-clear‘ polycarbonate, not only are they visually stunning, they are also incredibly robust, waterproof and will remain in pristine condition even after repeated handling. DO MORE WITH SNAPTECH™ The addition of Snaptech™ to your Rulers and Bookmarks creates a powerful mini marketing card to drive customers to your website, promote VIP benefits, redemption offers or discounts on future purchases.