Alfie Pet by Petoga Couture - Scott Collapsible 3 way Tunnel Toy for Cats - Color: Red and White The expanded tunnel measures overall 42" length and 35.5" width. 10" diameter for the entrances and 17.5" long for each tunnel. Entrance in the middle measures 8" diameter. Featuring a collapsible 3 way Tunnel which offer an ideal place for your pets to get freedom and room to exercise and stretch. Seemingly endless tunnel cat toy crackles curiously with every step. Cats can't resist crawling inside the mysterious interior. Cat Tunnel is expandible and colapsable for easy storage. It pops up/retracts easily, offering portable, lightweight fun anytime.