Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: I hope and assume the head band is adjustable is it?
Document: Comfortable and the band is adjustable for all noggins. : )  Works perfectly and I use them for playing games as well as singing online Karaoke! Their great and I would recommend them!
the earcups fit my 5 year old all the way up to me! the band part is adjustable. i believe the sound quality depends on your computer but these work well for us.I am editing this less than 2 months later :( Not sturdy enough for kids and switching from one computer to another. The metal part of the cord that plugs into the computer broke off
The sound quality is great. They are easily adjustable and feel good on my head. The cord could be a little longer.
The sound quality is good for the price. But after about 3-4 months these started falling apart. They started cracking up at the joints just above the ear cups, which started falling out of the head band! I use them at work nearly all day. Was disappointed since the sound is good enough and I thought Sony would be great!
The head phones work amazingly well very comfortable padding sounds amazing and loud! Extra long thick cord is great and useful (at times it can get in the way) the head phones come off the head band but I don't rec amend that was teff to snap back on and was scared I was going to break the little plastic pieces holding it in but it didn't over all im very pleased with it oh and came with an adaptor for my radio
I play in a Worship band at our church. We are a growing church of about 1200 and have 5 services a week. I play in 3 of them. We are always having trouble with head sets as they just don't work or break down. We decided to try these as they are not expensive. We have found we love these. I love the way the ear piece sets just on your ear. We have found they are not too tight in the head as others have stated. I am a women and other guys are wearing them too and are not having a problem.We have long reshural during the week and an hour before each service we play.
I actually had no problem with this headset but after a couple of uses a piece of the headset broke off which caused the adjustment head band to not work properly. It might have been done to my destructive little sister (11yrs) but another important part of the headphones broke off causing both ear pieces to come off the head band and it took some interesting taping to make sure it would stay in place. Didn't even last me a year but I loved the long cord. Great while it lasted.
The Sony V150 worked fine for about one year as I am not that fussy about sound quality. I did not find they were too tight or heavy. But after the first year one side of the earpiece began to fall off routinely. Each earpiece has a sliding, friction based part that allows you to adjust for the size of your head. However there is no way to increase the friction and after awhile it appears to weaken and the result is the earpiece slides right off the main band on headpiece. It doesn't seem to happen while it is on your head, but when  I am hanging it up or when it is just hanging on the hook.
I was wrong. My fiancee, after trying my new headphones wanted to get a pair but bought a different brand. The sound was average, being not much better than ear buds.I very highly recommend these affordable headphones to anyone who really cares about listening to music.EDIT:After a length of use. I do NOT recommend these headphones for those that have a big head. They did not flex over time to my slightly-above average noggin. They broke where the top band meets the sides. I can slide it back together but it will fall apart often.
I own both these and the newer zx100 I do have to say the v100 has a better dynamic range than the zx100 it produces a clearer sound and delivers better response over the low-mid and high-mid range.The only bad thing I have to say is that after 2 years I have gaff tape holding the adjustment bands clip, that attaches to the main band that goes over the head on.Personal expierience with headphones:Casual music listening form both computer and phoneLive mixing in theatreStudio monitoring in studioLive mixing on radio
Answer: Yes, it is adjustable on each side.