The product is a guitar tablature book titled "Nirvana – Nevermind Guitar Recorded Versions TAB" published by Hal Leonard. It features sheet music for songs from Nirvana's album "Nevermind," specifically arranged for electric guitar. The book is designed for intermediate-level guitar players and includes the guitar parts for rock genre songs. The format of the book is listed as Sheet Music, indicating that it contains notated musical compositions for guitar players to learn and perform.