I've had this type of mat before. The size is just right for the area I have does the job which it is intended for. The problem I have is that they wear out too soon and then I have to replace them again
I have a very lightweight office chair and just the chair alone left indentations of the casters on the mat and the chair doesn’t move around as well as I was expecting.
I purposely bought the economy product for the home office as the higher priced one only lasted 1-1/2 years. Let's see how this lasts. The bottom grips really keep it in place