Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Does the detachable 10L day pack have solder straps? (basically is it a detachable smaller backpack?)
Document: I was looking for a good short trek backpack/canoeing pack with a detachable day pack for my photography equipment. Obviuosly, Amazon carries a bunch of high-quality packs. I even went to REI to check some out in person. The saleperson at REI said none of the packs in stock had the detachable day pack. So, did a little more research on the Guerrilla site and made the purchase.Really enjoying the Guerrilla pack.
Just recieved it from amazon. Did not test it yet, but from the first glance - I really like quality of material and how all snithces are done - feels solid. The small backback is perfect - it even has a zipper which allow to adjust its's size (depth).
It sits well and has enough features to get the job done. Lots of flexibility.
I don't see why this thing isn't selling  its cheap and good I'm really impressed with the material used in it. Plus it fits well.
Great
Answer: no