Use this glow in the dark heat transfer vinyl by Siser to create custom designs that apply to T-shirts and other fabrics! This sampler includes one sheet each of yellow, green and blue in fluorescent shades. Details: Includes assorted sheets of yellow, green and blue 11.8" x 12" (29.97cm x 30.48cm) 150 microns 3 sheets (one of each color) Glows in the dark Plastic and polyurethane CPSIA Certified Applies to cotton, polyester, polyester/cotton blends and more Usage & Care: Wait 24 hours before first wash. Machine wash cold with mild detergent Dry on normal dryer setting Do not dry clean Liquid fabric softener not recommended