This Lap Stand Combo has a unique tongue and groove, no-slip hoop configuration. It holds the fabric taut while working on your project. It is designed to elevate the project hoop above the lap, while the unique feature of this stand is that it is collapsible. Each stand is composed of two hoops held together by three supporting rods, which space the hoops 4.5" apart. Simply invert the Lap Stand to work with either size hoop.