Two 18" high magic tunnels hook & loop together with 6" incremental steps, creating a unique hidey corner with multiple entrances for the 9 month old through 3's. Extra dense foam allows little ones to crawl over someone crawling through the tunnels. Soft pad nestles into corner and at tunnel openings. Add two mirrors 24" x 36" (sold separately) and increase creative experience. 5' square corner space required for safe use.