This amazing Iron Shoe is made of non-stick vinyl which resists the excessive heat, and protects fabrics from scorch. Allows high iron settings for all types of fabrics - cottons, denim, linen and even silk. Provides easy ironing movement over snaps, pins, etc. No more bumping off buttons from shirts. Protects the soleplate of your iron when ironing over sharp zippers or pins. Allows high iron setting for all fabrics, safe and efficient, one size fits all.