Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Do you need a tree strap or does this come with one?
Document: I love this system. Very heavy duty. I plan on buying one for every ladder stand I have. Very easy to use and makes you feel invincible while in your stand. Just follow directions and do not leave in weather for more than 2 weeks at a time. This would be great for younger kids who hunt. Don't have to reach around tree to adjust tree strap. Once it is put on, all you do is slide the prussic knot up as you go.
Great product you need to own one! You are safely attached to it at all times. I highly recommend this life line.
If you are leaving the ground to enter a tree stand you will need this system. It's easy to install and use! Why would you risk not going home to your loved ones?
This system can prevent injuries from the time you leave the ground until you return. It is a really great feeling to be safe while assending the tree and stepping into the stand. No more stepping into the stand and connecting a safety strap to the tree. I bought more for each of my hanging stands.
my son started hunting last year and i have begun to use these lines. they are great!! you will not fall from the tree if you are attached to this line. I don't feel like i need them, but I sure want my son to use the line. therefore, i now use it...  my only complaint is that it needs to be 5-10ft longer.
I like being able to hook my safety vest strap to this safety line on the ground when I begin to climb. I am always attached should I slip when going up or down the tree. At age 66 I find that this extra protection from a possible fall makes me and my family feel much better.
After I bought my first one, I have never climbed a tree without it. I currently have 6 of these and use them on every setup I have. You can't put a price on safety!
This product is one of the best safety ideas on the market for tree stand safety. I would recommend the safety system to hunters using any kind of tree stand. The prussic knot easily slides up and down insuring a "safety net" for the user. For the record this is not a safety harness, but rather it attaches to your safety harness. This product is simple, durable, and of excellent quality.
You need to be careful doing this so as not to slip. If you do slip however, you are still attached to a line which will prevent you from falling so that is a very good thing for your seafy.
I bought these for my son in law and grandson because my husband had already purchased one and said it was the best.
Answer: yes