Instruction: Answer the given question using the supporting document.

Input:
Question: hi the ipearl cover is great...it fits perfectly but why didn't i receive a keyboard protector with my purchase?
Document: Fabulous product! Great price! It fits perfectly. The feet are an added bonus (the feet can be used or not used but if used, will help with air circulation under the Air). Also the product arrived very promptly and with an unexpected extra - a silicone keyboard protector. The keyboard protector was not listed in the description so it may be a temporary extra from the seller.
This  is very nice and light cover and fits your mac perfectly .Also it comes with keyboard protector . Nice and must buy for Mac keys
I just received cover a week ago. This is truely an awesome case. I got the clear case and it is a very high quality plastic material. it fits perfectly.It also comes with a plastic keyboard protector. I find it too thick and ended up removing it.The purpose of this cover is mainly to protect the MACAIR from scratching and it did just that perfectly! !I do hear the same clicking sound as other reivewers said when opening and closing the lid.
I got this case for the NEW 2011 13 inch MBA, and it fits perfectly. For it's price point, I have no complaints. It comes with a FREE clear keyboard cover, so don't opt in to buy a separate cover when you purchase this case until you check out the free one that this thing comes with (the keyboard cover fits on the NEW MBAs, too). I'd definitely recommend this to anyone else thinking of purchasing a case for their MBA.
Pros:- Looks great- Very minimalist- Doesn't add any bulk (if any) to the MBA- Fits the new mid 2012 designCons:- Bottom is a little loose (kind of annoying but not enough to return it)- The back hinges do rub up against one another, but I think I'll survive. I'm not much of a complainerOh, and you get this cool little rubber keyboard protector which works well, but personally I like the clicky sound of the keyboard.
The hard shell cover is very easy to install & remove (in the event that every piece of lint wasn't removed prior to the cover being snapped on). It doesn't add any sizable bulk to the MBA. The clicking sound that's made each time the MBA is opened is a minor detail & not bothersome at all (at least to me it isn't). The accompanying keyboard cover does not fit perfectly. You're better off purchasing the UPPERCASE ultra thin keyboard cover that is a flawless complement to the iPearl mCover.
Clear case fits well on the MacBook Air 13.3 unit. Snapped on cover and bottom cover and both fit well closed and open. Purchase included a free keyboard membrane, which is just okay, but it was free. Would purchase this unit again in another color, but otherwise unit is as expected and described.
I recently purchased the Macbook Air and was looking for a good cover that would protect, but not hide the overall look of the item. I purchased the clear version of this ipearl hardcover case and I was not disappointed. It snaps on perfectly and you can barely tell that it is there. It is exactly what I was looking for (great price) and I would recommend it to anyone.
I did not purchase an external protection for my Mac Book air 2011, so i want to protect it from any scratches or just some kind of protection and found this product at Amazon .First I'm so hesistant to buy it might not fit or work,we'll with $25 no shipping why not... but when I got it, it fits perfectly .LOVE IT....I HIGHLY RECOMMEND IT.
I was a tad bit hesitant to purchase this since I was not exactly sure of the fit and quality. Let me tell you, it fits perfectly - snaps on like it should. You can tell it was designed by an engineer vs someone just wanting to throw something together. I also did not think  I would opt for the legs. I actually wanted it without the legs - But as I type right now, I can say that I was use them quite often.
Answer: No clue. But the flimsy filmy protector is not great. I used. Initially, but when you open the cover the protector would sometime stick to the screen. It fit fine,, but adherence was basically the stickiness of the membrane itself, which over time gets dust stuck on it. Don't bother.