Trace your design lines to embroider so easily with the FriXion Pen.  Remove any traced lines with your iron.....heat will remove the lines that still show!  Fine lines - 0.7 mm.  Set of 3 most used colors - Red, Blue and Black. 

NOTE: the traced lines may return on your fabric if the embroidery gets very cold - like leaving your work in the car during a snow storm!!

Wonderful if your tracing skills are not perfect - OR - if you change your mind and don't want to stitch something that you traced onto your fabric.