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: What is the 'bed' made of?  Hard plastic-type, or nylon?I don't see this addressed in the descriptions. A hard surface is too painful for my back.
Document: I've been using this for about 3 weeks. My lower back began feeling better after just a couple days. I dreaded bending over at all because my lower left back would get a painful kink in it that was hard to stretch out or get rid of. Now I can do all sorts of things that would have set the pain off and not worry. I look forward to using the Teeter everyday because it helps so much. As far as quality,  it is OUTSTANDING!!! Very well built.
Rugged and simple. This particular style of foot/ankle clamp is far more confidence-inspiring than the padded bar type. This style of foot clamp is well worth the extra money.The plastic back board is flexible (concave) and comfortable. It exhibits a cupping action as you go back which makes it easier to fully relax the back as you rotate. The foam ones (convex) are more comfy in a horizontal position but tend to scoot you to one side as you go back.
A few trips to the ER, a painful week flat on my back and an MRI later I found that I had a medium to severe herniated disk in my lower lumbar. The biggest side effect is the sciatic nerve pressure that radiates down both legs. This has caused me to have pain and a noticeable limp and pain after sitting up for a period of time. Anyway, while laying miserably one day over New Years. I saw a commercial for Teeter Hangups.
It was like solving a puzzle.-the instructions that explain how to put it together were also not very good. The diagrams are too small and it's hard to see which screw goes in what hole. But there are not too many parts and some come already assembled, so it was not too bad to figure out.-and lastly, there are 2 DVDs that come with the 950, one shows how to assemble and use the thing, the other is a bonus DVD with excercise routines for your back.
I called Teeter and they informed me that I would have to purchase an additional leg bar for about $75 which is the older version so that it would work with the antigravity boots. So now I have both the antigravity boots and the Teeter inversion table and do not use them. Also, I had to purchase additionally the padded cover for the inversion table seperately because it was not included in the original order and it is pretty uncomfortable to have your body and head on hard plastic when you are inverting.
Sometimes it seems to help considerably, others not much. I skiied yesterday and amidst considerable pain hung up for 10 minutes and it did provide some welcome relief (not total loss of pain but it diminished). My whole family has tried the "torture device" (easily adjustable) and my daughter (12) loves to invert ("it's SO fun").My only complaint is the painful ankles and achilles tendons. I just started wearing chukka-type shoes (mid-height) and it helps.
The bed is a hard plastic with holes, and it comes with a small pillow. Given how hard it is, I'm surprised by how comfortable it feels. There are stretch bars to be used while inverted. You can adjust the bed for partial or full inversion and for different heights. The key is finding the right balance for your body, and that took a little tweaking at first.
So I was quite impressed by the reviews here on Amazon regarding this product. Needless to say, my review is not going to be that positive. First the box was poorly treated by having one end crunched in the center. To my surprise the left &#34;plastic&#34; support mechanism of the table support, which attaches to the A-frame itself- was cracked right down the middle!
I use it daily at this point and it has made a difference in my comfort level. My back has become less painful and my daily activities are more easily accomplished. Although setup is possible with one person, I'd recommend having help with the assembly.
After a couple days of following along with the Healthy Back Class and doing some of the stretches and exercises while in partial inversion I came to the astute conclusion that Dr. Shaun's inversion board was better than mine even though it looked outdated. You can do the side crunches and side stretches with greater ease because it's a smooth flat vinyl fabric surface! The EP-560 is pretty rigid plastic with a lot of grip on your body making it difficult to move with ease.
Answer: yes