I purchased one of these in a 4 x 6 for my kitchen and a 2 x 3 for the front door.  The one for the front door is perfect because several of the jute/ratan rugs I have tried previously are too thick for the door to open, but this one is just right.  I also like the one for my kitchen.  It is softer on my feet than I was expecting and adds warmth to the room.  I do see where it could possibly unravel easily since some of the loops aren't real tight.