100% Cotton Dye Sub: 385º, 50 Seconds (use Teflon sheets between layers) Iron-On Vinyl: 365º, 30 Seconds 100% Polyester & Poly Blends Dye Sub: 365º, 35 Seconds Iron-On Vinyl (POLY BLEND ONLY): 285º, 20 Seconds (shirts, koozies, polyester hats, coasters, etc)...