River Guides, reward your high-end clients with a One-of-a-Kind Customized River Map Fly Box. Retail Fly Shops, have your shop logo engraved on the back of our fly boxes with the river map of your choice on the front. Do you have a major corporate event coming up? Stonefly Studio’s Customized River Map Fly Boxes make great gifts and awards. Call us for Wholesale and Large Volume Discount Pricing.