This is a SEALED DVD and guidebook set of the Great Courses' iRest: Integrative Restoration Yoga Nidra, authored by Molly Birkholm. The set includes a DVD and guidebook, with teachings on deep relaxation and meditation techniques using iRest. The publication year is 2018 and the language of the set is English. The item is categorized as a textbook and falls under the categories of Textbooks, Education & Reference, and Books & Magazines. The educational level is for adults and further education.