Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Is there a weight limit for use on the chair?
Document: I got this chair for my office and it is very comfortable. The first day I was a little sore on my thighs and belly from it so I know it is strengthening my core.
I have issues with my lower back and was looking for an alternative to office chairs. I searched for ergonomic chairs and kept seeing reviews and information for the Evolution chair. I decided to get it and I'm really surprised!
My chiropractor recommended that I try this at work, and the chair is comfortable. The chair fits me well at the regular setting, and I am short. There is a way to adjust for people 5'6&#34; and taller but I haven't tried since I am well under that measurement. I'm going to get another one of these for my home office.
After a month of sitting in it i can still say i like it way better than a normal chair. First day I got tired after about 4 hours and by the second day i could sit in it the whole day. Now you aren't going to burn the calories away sitting in a chair but the ball reminds to sit up straight at all times so if you follow it's advice your posture will likely get better.
The ball is rubber and will probably make you sweat, etc.
Poor quality casters. Great idea, but I didn't want the cheap plastic casters to scratch my wood floors. I would have paid more for better quality. I returned it. I will say that I love Amazon, super customer service, and I never have a problem purchasing or returning anything.
I like the ball and feels great. My pin won't stay in after inflation though and may have to replace.
Answer: yes