Pacific Play Tents Kids Outer Space 4' Foot Crawl Tunnel for Indoor / Outdoor Fun Tunnel size: 4 ft. x 22 inch - Tunnel collapses flat for easy storage and portability 190T 70 Denier Polyester Taffeta fabric with durable construction for long lasting play and fun Interior padding around hardened spring steel wire structure for safety and playtime comfort Easily wipes clean with a damp cloth and mild soap - indoor or outdoor use Crawling and tunnel play are excellent for muscle and motor skill development in toddlers and children