I purchased this so I could craft when we travel, and on our recent trip to HHI I was able to put it to use.  It worked well; the reason for 4 instead of 5 stars is because the mats need the insert guides closer to the wheels to insure they start out straighter and because there is a propensity for the top of the mat to brush against something as it goes in which bends the corner and makes a concerning sound.