I like this product.  It is by far a better design than those that cover the box spring.  It can be easily adjusted.  
In putting the top fitted sheet on the mattress it is easy to catch the bedskirt and tuck it in with the sheet.  But it is easily pulled down to where it belongs.
This design will make laundering the bedskirt a breeze.  No need to remove the mattress.  The elastic allows you to just pull it up over the mattress.