Most yellow iron-on sheets and rolls are made from PET (Polyethylene Terephthalate) heat-transfer film.
Common care recommendations include: wait 24 hours after application before washing; wash and tumble dry garments inside out; avoid bleach; and, if ironing is needed, iron on the wrong side (back) of the fabric.
Some yellow iron-on products offer special effects, such as UV-activated color change. Other options include different surface finishes—like matte finishes—that can change appearance or react when exposed to sunlight.
At least one transfer-sheet type is described as light-sensitive and can be damaged by contact with water. The details advise storing sheets in a dark, dry place to protect them.
Yellow heat-transfer materials are commonly used for apparel and accessories, including T-shirts, tote bags, jean jackets, backpacks, and outdoor décor.
Some transfer sheets are described as infusing into the fabric so the design becomes one with the material, whereas regular iron-on vinyl typically sits on top of the fabric.
