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: Can this bag be tethered at the bottom?
Document: 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.
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.
Unless there is a big breakthrough in other bags, I don't think I will switch back from a water bag.
I purchased the 140lb version and the quality and feel is great. I'm 200lbs and with the bag filled all the way it doesn't move too much when I'm using it.
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
Brah, this bag is sweet... don't know why it took so long for me to just do it...I was stuck in my mindset of tradition I guess...Not a bad thing to say about it.BUT everything good!!!!
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.
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.
arrived with the box all beat up and falling apart, but everything inside was fine and works well. Only issue was that there was no advice/instruction as to how to fill the bag without making a mess. Worked it out with the stuff I had at home but some advice would have made it easier.
The bladder inside is not a hard cylinder, but more like a balloon. You can easily flatten the bag when it is not filled. As you fill it, you can see it expand out. I think that the internal bladder expands out against and compresses the outer foam. So the foam does give it a little give, but not much at all.
Answer: yes