A 4×4 post cover. Keep them dry or make them look uniform. Can keep them from splitting. I like to put owls on them to scare off the woodpeckers. Have put gargoyle, pumpkin, Christmas trees, or drink holder. Whatever you want. A way of decorating deck post with no damage. I did spend a bit of time designing these. Made several sizes till I felt it was perfected. It is not perfectly squared, as I have not found a 4×4 post that is. So, if it doesn't fit at first turn it. It's meant to be snug, so it holds heavier things on steady. Have fun! would print at 100.5% if you want to take them on and off allot.