Everything You've Ever Wanted to Know About swing to hang from tree
http://louisiqiq676.jigsy.com/entries/general/9-signs-you-sell-tree-swing-installation-for-a-living-2
This swing is great. It's a bit thinner than our other swing, but not in a bad way. I think it's a little more comfortable. The chain is also just a bit thicker. My sons love it, and it works well!