This is a book with a DVD, but the DVD is missing and not included. This is a listing for the book only. This book is a technical guide by Yusuke Takahashi for improving your crawl stroke. It provides easy-to-understand explanations with photos on how to improve your form, kicking technique, and entry into the water. ■Condition ・Slight scratches on the cover ・The inside is relatively clean ・No writing or markings Please understand that this is a used item stored at home.