It is the classic envelope with the outside stating rattle snake eggs be careful, and whey you open it, it will rattle and make noise to startle them. The only difference from our classic version is that this envelope is in color. Same wind up the device, close the envelope and hand it over to someone who has to look inside and it will go off startling them with the rattle. Fun to use, can be used over and over again. Great for holidays, gifts, birthday party favors and more. 1 per package.