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Heat-transfer films use carrier sheets or release liners to hold the artwork in position until transfer. Peeling at the wrong temperature, angle or stage can lift or tear parts of a logo even when the fabric and graphic are otherwise compatible.

Disperse dyes in dark polyester can migrate into some polymeric heat-transfer films and contaminate a white logo, producing a pink or dull cast. Special barrier layers may reduce migration, but their effectiveness depends on the dye, adhesive, pressing process and ageing conditions.

Silicone grippers are used on cycling jerseys, compression shorts and activewear hems to reduce movement against skin or an inner layer. A strip can provide excellent initial grip yet become uncomfortable, peel or slip after sweat and washing.

Silicone-based textile softeners can improve the hand feel of polyester, but some finishing treatments alter surface wetting and may make selected prints, adhesives or heat transfers harder to bond. The effect depends on formulation and treatment level.

Bonded hems use heat-activated tape or film rather than, or alongside, conventional stitching. They can create a clean low-profile edge, but an initial smooth appearance does not prove the bond will survive washing, repeated extension and skin contact.