Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: What are the dimensions of the large cutout in left side of the case?
Document: Great idea! Just wish it had more storage room and compartments on the left side, and a handle. And an outside pouch would be nice for keeping straps, like the GoPro Chesty chest mount. But even without those features, this case does a good job.
Nice case with good protection. Got all my current assessories and one GoPro Hero 3 in the case, but no room left over.
fits a lot of the components, is compact and has room for two go pros. Missing specific slots for filters and flip side and top filter holders. Missing specific slots for batteries (especially if you want to charge several and carry more than one in the case)
Bought both the small and this large case for my GoPro Black Edition.They should make one just for accessories.
This is a great case! I have nearly all accessories (exluding large poles that extend) for the Go Pro and they all fit! the foam is pre-cut and adjustable in case you have seperate housings/cameras.
The mesh pocket is dark and just another junk drawer. The case needs to be about 50% bigger, with cutoutrs for al accessories so anything missing can be seen immediately. With this case, you see your camera is there but everyhting else is just jumbled.. POV - You need a large organized case for the AVID, organized,  fan! Thanks.
Onre reason I bought the :Large&#34; case is becuase they said the &#34;Medium Case&#34; wasnt big enough. Well, neither is this case. If you are an avid Go Pro fan, you have MANY  acessories from helmet extension to suction cup to all kinds of back door options.
This product seems to be made of pretty good materials, but at the end of the day it's a rigid soft case filled with foam and some cutouts. It's pretty expensive for what it's worth. I bought the large size because I have a lot of accessories for my GoPro, but then found out how difficult it is to travel with (on a recent trip to Asia, I ended up packing it in my nephew's child backpack because it took up too much room in either of my bags).
Don't waste $60 like I did. I bought this case and was really disappointed when it arrived. WAY overpriced and even this &#34;large&#34; edition is not big enough for my use. I ended up buying a Pelican 1500, and although the Pelican was $40 more than this case, its 10x the quality, water proof, rugged, about twice the size and was able to custom fit the pick and pull foam.
I was under the impression that this case was large enough to hold two GoPro's and gear but this is not the case (no pun intended). I was also confused by the picture since it shows two case's and you are only purchasing one. Why show two case's in the only photo posted? At first I thought that maybe this case had an under storage spot for the attachments but after reading other reviews and looking a little closer I could tell it does not.
Answer: The large opening is 7 1/8" x 5 3/4". The foam is 1 1/4" deep. My foam is not customizable. The cutouts are fixed.