Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Is this a puul over or velcro close on the back ?
Document: This ZANheadgear neoprene face mask is exactly what one would want. I got mine in black and it's breathable, reversible and very comfortable. The quality is superb, although a few strings in the stitching had to be cut b/c they were sticking out but just barely. the back is velcro and allows for easy fitting. in terms of shipping, the product arrived on time and was well packaged. overall 5/5.
I was happy to get my masks almost on time, only a day late. When I tried to put the stupid thing on, I thought that they had forgotten a section of the mask because as hard as I pulled, I could not connect the two velcro sides in the back. It`s as if it were made for a child. " 1 size fits all " That remains to be seen! I guess I must have an abnormally huge head.
This mask is probably not going to fit your face perfectly, no one size fits all usually does.PROs: It is warm, especially on the ears. I would wear mine with a stocking cap on top and that would keep my head very warm. Good visibility from it too. Velcro in the back makes it easy to adjust to correct fit and neoprene stretches to accommodate.CONs:  For me the biggest problem revolves in the fit around the nose and mouth.
Easy to put on and keeps your face extremely warm. It eliminates the need for a scarf with your jacket zipped fully. It is reversible, but my model was black on both sides. The velcro fastener is on the back. Holes for mouth and nose too. Can't comment on fogging of glasses, but works well for someone who doesn't wear glasses. The mask also covers your ears which means you can leave your earmuffs at home. Wish I would have found this sooner. Highly recommended!!! !
I like the adjustment capabilities with the strap on the back of the mask. Allows for a nice fit on the face of the person wearing it. Comfortable material as well. I would recommend this purchase.
I love this thing because it protects the face from the sun, wind, and rain. I wore it to the store when it was cold and drizzling rain and i felt toasty warm but heading back home I don't know why but I didn't put it back on and my face was freezing cold.
This winter has been brutal, when using my snow blower my faced usually got covered in snow due to the wind blowing back in my face. I looked at all the local store's and couldn't find one anywhere, finally went on Amazon and they had many to chose from. I haven't used it yet but it looks like it will cover my face perfectly.
Velcro is good holds well and in place , good material, great protection even in blizzards or snow blowing. Highly recomended
Yes, I still had the mask on. Between the blood on the back of my head and the extreme electricity I absorbed it is now welded onto my face. I decided to stop at 7-11 for a big gulp. I guess a man walking into a 7-11 wearing a mask raises a few red flags with the employees. Two of them began attacking me as I filled my cup with ice yelling "the cops are on the way".
The fit is just okay. I tend to have a smaller face/head, therefore, it slips around if I run. I can add more Velcro to it in order to make it adjustable, but I rather not have to do that.
Answer: yes