Embroidery hoops are circular frames used to hold fabric taut while stitching. They come in various sizes and are typically made of wood or plastic. The hoop consists of two rings: an inner ring that holds the fabric and an outer ring that tightens the fabric in place. This tension helps prevent wrinkles and allows for more precise stitching. Using an embroidery hoop is essential for many needlework techniques, including cross-stitch and free-motion embroidery. By keeping the fabric stable, it makes it easier for crafters to create detailed designs. Embroidery hoops are a staple tool for both beginners and experienced embroidery enthusiasts.