An envelope is a fantastic and innocent tool for magicians and mentalists. Mystikos Envelopes offers you a new practical, durable and elegant solution for your performances. In each pack you will receive: 10 normal envelopes & 10 window envelopes with removable clear plastic. Made in mystic black color. Strong Tyvek material guaranteed to last for repeated use. You can use it as a single item, or in conjunction with other props (such as our Universal Switch Device) to expand your options! You will also receive video and written instructions with a variety of commercial ideas and routines: 1. Homage to Theo: A full act using a powerful combination of principles. 2. Psychic Elimination: One participant FREELY selects any ESP Symbol. Another person, while in an intuitive trance, draws one of the ESP Symbols. They are identical. A synchronicity is created! 3. Black Night: A direct approach to the classic opener, perfect for any stand-up parlor performance. 4. Dual Experiment: A double test-conditions test. Prediction and mindreading, all in one. 5. The Best Gift: The perfect routine for any birthday. A complete mini act using your new envelopes.