Catalogs are looking for unique, specialty products to insert into their print and online catalogs. When you contact them and they accept your product, they purchase finished goods from you and do not license it from you. You need to be ready with inventory to ship from or a date when your product will be ready to ship to their warehouse. Be prepared to send samples to the catalog buyers after you have made contact and they are interested. Once accepted, they will send you a vendor agreement to be filled out and get set up with them, followed by a purchase order with quantity requested and window to ship. Catalogs can be a great launching pad for your new product with smaller orders and higher margins to get you started.