With a dazzling holographic sparkle finish, this rainbow patterned iron-on vinyl is a great addition to your craft kit. Works with cotton and polyester and it's CPSIA certified, so it’s safe on garments for any age. Details:Sparkle rainbow design12" x 19"1 rollCPSIA certified safe for use on children's garmentsFor use with cotton and polyesterCare and Usage:Pre-shrink any shirt with cotton contentApply with firm pressurePreheat fabric for 3 seconds, then apply transfer for 8 secondsWait for product to cool about 20 seconds, then peel liner off