http://www.gradshop.com/black-kindergarten-graduation-cap.html - Black Kindergarten Graduation Caps. When you order your black kindergarten graduation cap from Gradshop you know you will be getting top quality products for low affordable prices. The black grad cap is the traditional classic for graduation ceremonies and made from fine quality shiny tricot fabric. The mortarboard measures 9.4"sq, and includes durable elastic at head rim for a perfect snug fit. Further discounts are offered by Gradshop for bulk orders, so order with your classmates for great savings.