Wow!  Bigger and thicker than I expected. I do NOT have problems with the edges in any way, I have a bad foot that sometimes drags and This nice thick mattress like mat hasn't tripped me up at all!   The wave pattern was an unexpected bonus as the memory foam decompressed as well.  A very attractive and useful bathroom mat in front of my double sinks.  I got a second for my kitchen for the sink/food prep area. SO COMFORTABLE to stand on.