this is an extraordinary mattress protector.  It is big enough so that you can easily get it on the mattress. (i did it alone.  I'm 75 years old}.  Also, there was no smell when I opened the package.  Usually one has to wash or at least put it in the dryer.  the fact that it is waterproof and helps with allergies is also a big plus.  the price is very reasonable and i will buy it again when i have the need.