Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: I'm getting this for a Setampunk musician friend as a gift, could you tell me if the strap on them is adjustable?
Document: Very nice Steampunk goggles. Arrived in good shape and are as described. The removable magnifiers are neat and everything is well made. Adjustable strap fits any size pumpkin.
A friend of mine gave these to me as an early Christmas present and I have to say that I think they're great. The adjustable, elastic headband piece is great and really helps make sure they stay in place.
I was so disappointed in the product when they arrived. They were a Christmas gift for a steam punk fan and I really could not bring myself to give them to him in the condition they arrived. They're a half-hearted effort, obviously put together to benefit from the steam punk trend.
this were just swimming goggles that a child could have put together.
Got it as a gift for my fiancee and she LOVED it! She wants to put together a steampunk costume and this piece is beautifully done. The attached magnifying lenses are a little fragile so you kinda have to handle it with kid gloves, but we haven't had a problem so far. Lenses are tinted pretty dark, so not recommended for everyday-all-the-time use, but work nicely as sunglasses. Very cool piece especially for costuming purposes.
I'd send them back but they were a gift and no time to do a refund. So outside of that it's up to you.. You can spend $10.00 and about 20 min of your time glueing the knick nack on the glasses, putting the hose clamps around the frame Id go that route, Or unless you wanna make the Rothchilds of glasses wallet fatter then By all means order here....they were quick with the delivery and the package came wrapped very nicely.
I got these for my best friend's birthday that's coming up. He's really likes steampunk stylized stuff and last rave we went to he lost his old goggles and so real upset. I figured these would be a great gift, but when I opened the box and saw them I was very annoyed. Unlike the picture, it only has one set of magnifying glasses and they just fall of because the clip that attaches them to stupid hose clamps. DO NOT BUY THESE! Way to much for these pieces of crap.
look PERFECT with my steampunk outfit. Heavy duty and SOOOOO cute. Authentic looking and durable. Perfect to complete any costume or outfit.
it is a little price for something that cool I would suggest  these steampunk goggles to any one h that is in to steampunk.
This was for my first steampunk costume, and everyone complimented them. They are attractive and detailed. The glass magnifiers are removable via clips, which you should make sure are tightly on before going out. Thes eare definitely for tinkerers and not aviators, so know your theme before buying. Safety notices: Don't pick up babies while wearing these because they will grab them and pop off the clips. And watch the pointy parts!
Answer: yes