Instruction: Answer the given question using the supporting document.

Input:
Question: Are they glass or plastic filters?
Document: Couldn't be more pleased, I'm sure that as I learn to fully utilize these filters I will be even happier.
I don't need the cloth but I wanted to be able to use filters and possibly lens on the camera. It has  the basic filters and a nice folding hood.
Received in a very timely manner. It was as advertised and a good buy. The lens adapter kit was an easy fit for my Nikon L820. I wanted to protected my camera lens and this will do much more with the filters that came with it.
I ordered this for my L830, hoping that it would work. No problems, works great. Also compatible with other 62mm filters. You can do VERY COOL things with filters. They make the difference between good pictures and amazing pictures. Well worth the money! !
Love it, I took a chance because I have the Nikon Coolpix L820 and had seen another kit like this and it stated it fit the L810 or L820 so figured this should fit mine too and it does ! The filters work great and adapters are nice and snug. Very happy with my purchase of it !
I was impressed by the way the adaptor fit my camera. The adaptor was very easy to install and fit like it was part of the camera. It can be taken on and off with no sign of installation left on the camera. The filters and filter case were also of very good quality. I would recommend this to my friends.
I bought this for my Coolpix. L820. The tube attaches easily and has a perfect fit. The tube is very good quality and the threads are perfectly done. All the lens filters go on and off easy. They all worked great and are made in Japan. I'm very happy with this purchase. A terrific bargain.
I looked forward to this accessory kit for the filters it contained. It came in today; 6/6/14. It was RETURNED today, 6/6/14. After mounting the filter housing and securing the polarizing filter I went out to try it. Nice sunny day. What I got was a circular picture in a rectangular black border. Perhaps there's a reason but with absolutely no documentation it was what it was. I would not recommend.
Who knew that you could do so much more with a digital camera like add more lenses nowadays - well now I do! This is a great little starter kit, though I have no clue what to do with the rubber thingie at all (what advantages it provides to the overall finished product), I am enjoying trying out the various tinted lenses to get better clarity in my pictures than I ever thought I could with a digital camera!
This product excelled my expectations! It arrived on time and in perfect condition, as well as being exactly as described. The personal service was a blast of fresh air in this age of impersonal machines and business dealings. I would recommend this product to anyone looking to get more out of their camera!
Answer: Glass Filters