This Clear Transfer Mask is matched to our patterned HTV to transfer your cut and weeded design, onto a garment or project blank. It's high tack adhesive provides a firm grip on the patterned HTV & prevents wrinkles and warping during masking. The Transfer Mask protects the HTV design from heat damage from the heat press during the application process. We recommend ONLY the use of our Siser TTD Hot Mask with our patterned HTV. Transfer Mask Installation: 1. Lay the weeded vinyl pattern on a smooth, clean surface with the design facing up. Cut the clear Transfer Mask to about 1/2" larger than the vinyl design. 2. Remove the backing paper from the Transfer Mask & lightly lay the hot mask onto the vinyl, adhesive side face down toward the design. 3. Apply firm pressure, working from the center out, using a squeegee to push air outward toward the nearest edge. 4. Work slowly, taking care not to push wrinkles into the mask, so make only short strokes. PRO-TIP: Do not apply Transfer Mask until the day you intend to press it, as some ink transfer onto the Mask may occur if it's applied too far in advance.