Unity Day Orange, A World Of Kindness Unity Day T-ShirtSolid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Unity Day Orange, A World Of Kindness Unity Day. Unity day, a landmark event of National bullying prevention month has been recognized in the United States since 2011. To participate in unity Day, people, schools, communities and businesses wear or show orange clothing to show