Ew.  It is PLASTIC.  This is the ugliest "rug" ever.  There is no way it is washable. 
 Perhaps they mean, rinsable.  Like with a hose outside.  It would not fit in any washer, commerical or otherwise.  Feeling a little duped by Wayfair.  Also, Wayfair is charging me for return shipping.  Did you know if you start the return process, it will give you a choice of a 20% discount if you keep it?  Try it!  Wayfair, you suck for charging.