Fits my keyboard, which is just over 13 inches long, without stretching. I had no doubt that the GMMK pro would fit with Cherry profile keycaps, but I was expecting stretch. I'm surprised to report that the fit is pretty much perfect and shouldn't stretch. Given the touch and thickness of the material, it seems durable. I only started using it today, so I can't comment on long term durability, especially after plugging and unplugging the keyboard and putting it in and out of my backpack. Must be updated later. But for now, I'm sure how well my knowledge base is protected and for $14 if I only get 1 year use I would consider it a good buy.
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