Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Des this product come unfilled with water?
Document: You can even come up directly underneath it with a knee and the bag will not hurt you. The bag is much more uniform from top to bottom than a normal bag. I would never hit a non-water bag at the bottom as hard as I can.I noticed with this bag that I'm able to pay very close attention to my form.One thing is that you still need to wrap your hands and wear good gloves with this bag. I use 180" wraps and 16oz.
The bag works great! It would have been nice if it had come with filling instructions telling you that you should fill it partially then take the hose out and let it sit for a few minutes before filling it the rest of the way up. Other than that I have no complaints about the bag or purchasing it.
Unless there is a big breakthrough in other bags, I don't think I will switch back from a water bag.
When your valve is closed and the water supply is shut off, disconnect your hose and you're  done and ready to hang  your bag. *If any of these simple steps confuse you, you're probably in over your head to begin with
The bottom doesn't have as much give because there is more water mass above to displace, but it is still much better than a non-water bag.-You can hit it at 100%.-Uppercuts and body shots are amazing.
I spilled some water during the fill but I have it setup outside by my pool so that wasn't a concern for me at least.As far as cons? It's not the cheapest bag on the market and you have to have a heavy duty stand if you go that route.
There are no instruction s in the box and it's not intuitive when it's full. So, bsically yo uhave to drop the thing on a scale. Which gets a bit annoying after three or four tries. Then, when you fill it up most of the way (I got mine to 90lbs), and try to take the hose off, pressure from the rubber bag forces water out of the nozzle and up into the air.
A water bed is NOT a good example because a water bed has a lot of area for the water to displace to. In the heavy bag, there is only a little area for the water to displace, at the top. So when you hit it, for it to give you're having to lift upwards all of the water above where you hit. So the give is not much, but it is enough for you to be able to hit the bag as hard as you can.
The length and width is great.CONS:-You do have to fill it with water. It is not a pain, but you need to get a 3/4in double female hose connector adapter if you are going to use a hose. I can't imagine filling the bag by pouring in water. Other reviewers on other sites have said they did this, but could only get about 2/3rds full.
They are so much easier on your joints and muscles. Not to mention the fact that the bag absorbs the blows much better when filled with water, therefore keeping the bag almost stationary. Most standard heavy bags swing wildly when you're really pounding on them.Filling this bag was simple! Easy suggestions below:1. Attach a water shut off valve to the male end of the supplied bladder.
Answer: no