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

Input:
Question: im 5'11" 170 pounds witch size should i get ? what is the difference between 6" to 4" ?
Document: The belt works and a size medium was perfect for me at 5' 6&#34; 175 pounds with a 30 inch waist. However, the belt feels and looks very cheap. I don't think it will last very long so I'll probably end up replacing it after a few years since I lift around 5 days a week.
The gist of this belt, for me, is that it's better than nothing. However, the back is too small for me (5'8 - medium). I had to go up to the 6-inch back because the 4-inch didn't sit high enough, and it wasn't comfortable when I was squatting. The 6-inch fits great though.Quality wise, you're likely not going to find a better deal.
Seems well made, for the price am sure I will get my moneys worth out of it. I like the 4 inch belt as opposed to the wider belts, it dosent feel uncomfortable or dig onto my hips when squating.
Its my size, its comfortable, and overall im glad with the purchase with the low price. Its worth the money.
Perfect product, don't question yourself about getting this, get it and you won't be disappointed, just get the right size and you're be fine.
My waist size runs around 34"-35" and if I do pull the belt tight, I have only two hole positions available. So, if you're using this tightly fitted for heavy weight lifting and have a similar waist size as mine, you should probably get the next size down, the Medium (31"-37") and it should fit just right.
This is a great quality belt at a great price. Very durable and works very well when lifting heavy. I bought a size small 4&#34; width for myself. I am 5'1&#34; and 130 lbs with a 26&#34; waist and it fits perfectly! I LOVE IT!
The construction is not as sturdy as my old belt from 25 years ago but this one is holding up well. I lift about 6 days a week for an hour or so each day. The belt performs well and supports my back and stomach muscles.
bought this for my son for Christmas! He loved it! He is about 5'11 and 182 lbs. Works really well for him!
very gud but xl is like xxl be carefull if your waist is 38 - 40 get the large not the xl
Answer: yes