This is the special stabilizer for performance fabrics like under armor

PolyPro Performance embroidery backing was designed to reduce puckering when embroidering microfiber performance shirts with excessive stretch in the fabric. PolyPro is ideal for moisture wicking and microfiber fabrics that present unique challenges during embroidery.

When using PolyPro, we recommend the following for best results. Use one sheet – do not stretch the garment when hooping and keep hoop level (do not recess inner hoop).

20” x 10 Yards long