LowCat™ Tunnel with Extended Height KitLowCat extended height kit gives you the option to add 10" to your hoops when you need it. This Kit of 11 hoops can be setup at regular or extended height. Kits consists of 11 Hoops Height Risers for 11 Hoops Both Regular and Extended Height Shock Cord Also included are two U Stakes to hold down the cover And one Carry Bag Coverings are sold separately Your choice of row cover, poly, perforated poly, shade cloth, or insect netting is all that is