The New Ideal Student Edition includes a 4" Ideal Seam Gauge - Excellent measuring tool to set an accurate and consistent seam allowance. Our 4" Ideal Seam Guide - Amazing straight edge tool w/ Sew Tacky TechnologyTM in aiding sewers to sew straight seams, and a 4" curved Ideal seam guide with notch - use curved edge for curved seams and use the notch to wrap around your walking foot. Both guides are made with our Sew Tacky TechnologyTM a military grade rubber and are thick enough to provide a fence for your fabric as you guide it to the needle. You can re-position the Ideal Seam Guide hundreds of times! When the Ideal Seam Guide loses its grip, gently wash it with a multi-surface cleaner, rinse it and let it air dry. The Ideal Seam guide regains its grip again and again!