There are two sizes in each package: Baby Batt and Mama Batt. Baby Batt goes under your right hand where you have less room because the quilt's all scrunched up in there. If you are working on an extension table or have your machine sunk into a table, you have more room under your left hand, so you can use the larger one there and get a bit more traction surface. Place the batts on the quilt, pointy sides in, lay your hands on them with your thumbs on the quilt. Very light forward hand movement will help you scoot that quilt right through the machine. Using these also keeps your hands flat on the quilt, which we have found alleviates tendon and muscle aggravation in the wrists, elbows and shoulders.