Glow In the Dark PromoTreds®, using a special glow in the dark ink, is the latest addition to our line of fun and functional slipper socks. Glow In The Dark PromoTreds will be kept and used again and again, continually exposing the customer and others to your glowing logo or message while also providing a slip resistant tread. Glow in the dark ink is activated with minimal indoor light or natural light sources. After 5 minutes of light exposure, the glow in the dark ink will be activated and will last for hours. Brighter light and longer activation time will improve glow density and duration. The glow in the dark ink is available in “puff” white and can be printed on most of our ankle and mid-calf length socks. Please see the price list on the Distributor tab for complete pricing and product information.