If like me you have been using the bigger rolls of vinyl and cutting them to fit your Cricut Joy, then this is an excellent item for your toolbox.

So long as you are cutting the width of vinyl correctly (14mm ... although 13.9 fits nicer), then this grip mat with help you keep things in place while the cut is in progress. No more ripple effect if the vinyl gets caught on one side while cut is underway, which sometimes can cause the vinyl to come away from the backing material.