Pink Nurge plastic hoops are fantastic for keeping your fabric tight. They are called square hoops, but they are actually rectangle shape, which makes it easy to stitch into the corners. They are lightweight and rigid with a good sturdy tension screw at the top.
PLEASE NOTE: These are authentic NURGE hoops. Before you purchase something that looks the same, please check if they are engraved with NURGE on them. These are the only hoops that hold their tension.