REGULATION SIZE: Regulation size (18” long coiled shape shifting tube with 24” double-ended openings -- AKC and NADAC compliant) dog tube modeled after those found in courses at sanctioned dog events. Recommended for small to mid-sized dogs weighing up to 80-90 pounds (casual use only). DURABLE MATERIAL: This agility dog training tunnel is lined with a covering made from lightweight yet surprisingly durable 600D woven Oxford Dacron. Included in the set are 8-10 anti-rust zinc plated 7” stakes that insert through the metal grommet tabs around the base of the tunnel. The downward angled tops of the stakes are designed to not protrude out of the ground so they don’t cause harm to your dogs while they play. ENDLESS EXERCISE: A tremendous resource for sharpening your dog’s obedience, quickness, dexterity, and overall quality of life. Use our dog tubes and tunnels for casual play, exercise, and introductory training. PORTABLE: Arrives in a circular carrying case with dual nylon black handles at the top for effortless transport. Once removed from the case, it instantly expands to full length like a pop out tent. Quickly collapses and folds back together when you are finished. Set it up inside the home, outside, at your favorite beach, and much more. EASY FUN AFTER A RUFF DAY: Sometimes dogging is ruff, and a pup just needs to run around to shed some stress. Our dog training tunnel is a quick and easy way to create dog backyard play equipment.