Tri-blend gives colors a soft, heathered effect that s just the right laid-back hue. 4.4-ounce, 50/38/12 poly/ring spun cotton/rayon, 30 singles Tri-Blend fabric infuses each garment with unique character. Please allow for slight color variations. Due to the heat sensitivity of tri-blend fabrics, special care must be taken throughout the printing process. Consult your decorator or ink supplier for best printing practices.