Naylor Agility Tunnels * Made from heavy-duty 18oz/ft PVC fabric (610gsm) that is exible, durable, and provides excellent traction * Spring steel wires are heat-welded in place and enclosed by a thick PVC scruff strip extrusion * Extra ring at each end to provide additional structural integrity and keep the tunnel round * Meets equipment speciications of all US agility organizations * Available in heavy-weight model for competition and medium-weight for training cleanrun.comhttps://www.cleanrun.com/category/dog_agility_equipment/dog_agility_tunnels_and_tunnel_bags/index.cfm