WellieSTR 1 Pen Style Disappearing Fabric Marker/Tailor's Chalk + 8 Refill It marks crisp sewing lines on fabric that can be completely removed Pen stlye design,just push the button ,the liner will out ,Refill exchangeable 1 pen + 10 replace Refill Product Usage: Clothing, sewing, knitting, toys, DIY crafts, handicrafts, footwear, landscape and other manual operations