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

Input:
Question: Is the center of pan flat, or humped?Thanks for your feedback.
Document: I haven't had any issues with food sticking to the pan. The biggest disappointment is that the pan is not flat--it's raised slightly in the middle. So, when you pour pancake batter slightly off-center, the batter starts to slide to the edges. Given the size of the pan, the edges don't get as hot (at least with my gas burners) which leads to things cooking unevenly when the food starts to slide toward the edge.
The bottom of the pan gets warped after a couple months of regular use. Now the center of the pan is higher than the outer edges. I have never washed the pan with cold water while it's piping hot, I always let it cool down before washing. Even with this precaution, it still get warped considerably. It's not only annoying to cook with uneven surface, its also reducing the effectiveness of heat transfer from my flat electric stove.
These are great pans. You can cook at a low heat and evenly. We use these every day - our favorite pans. This is for a Christmas present and I am sure it will become her favorite pan. Thanks for the ease in ordering and shipping.
I love this pan because I can fry almost an entire package of bacon in it. Thenlarge size has a problem with even heat. The center of the pan heats well while the outer edges cook much slower. Thus shifting the contents is required to get an even cooking.
I am very happy with the new frying pan! It is big enough to get the job done with a big family. I really like the handle on the opposite side for safe lifting. 'Could not find anything like this,as far as size, on the market. So thanks for having a very useful product for me. Wish it came with lid.
I've bought 3 of the T fal pans w/ the red dot centers. And each one is higher in the center and lower on the edges. When you put oil into the pan, it all goes to the outside. To have oil in the center you would have to have way too much that would accumulate on the edges. This pan went w/ my other older pans for my sons to use when they have bon fires.
Was very happy about this pan for the first month or so until we started noticing that the pan started to bulge at the bottom. Didn't bother us very much at first but now after using it for 3 months, it's so rounded that only the center bottom portion of the pan make contact with the burner. Everything you put in the pan slides to the center and it rocks around making it very unsafe. I'm past the return period so I'm out the $$ spent. Very disappointing.
I bought this pan as a replacement for my T-Fal large skillet because the non-stick no longer works. It was made in France and of high quality. This pan is made in China and of poor quality. The handle is hard and does not have a good grip. Beware!Also, I contacted Amazon and was promptly refunded. Thanks, Amazon, for the great customer service!
High quality, perfectly flat, beautiful pan. Buying another! What else can I say. Cheap price for the quality and convenience.
Excellent brand at a good price. T-Fal pans heat evenly and stand up well to everyday use (and abuse). Standard shipping delivered as advertised. Thanks.
Answer: flat