These fence kits are usually poly and don't include a chew barrier and don't overlap on the ground. That means for example if you order a 4 foot fence kit, we will ship you posts that come out of the ground 4 feet and 4 tall chicken fence to be hung on those posts. This configuration is great for customers creating movable chicken grazing areas. Our post sleeve system includes locking set screws which hold our chicken fence posts in the ground. Ground sleeves stay in the ground, while posts and fencing are removed for storage. Customers can go so far as to create separate areas, leaving the sleeves installed in the ground, rotating grazing areas over and over.