I use full body harness hooked to the tree when in my tree lounge. the one that comes with the tree lounge is not a good one to use. It is just a belt that goes around your waist. If you were to fall with it on, It would more than likely break your ribs and suffacutate you in about 15 -20 minutes. Get a full body one or a vest harness!

Study up on fall safety and suspension truma...