http://www.gradshop.com/purple-kindergarten-graduation-cap.html - Purple Kindergarten Graduation Caps. Gradshop offers the lowest prices online for graduation products to outfit your child's kindergarten ceremony. Each purple mortarboard cap is made from shiny tricot fabric which match the Gradshop shiny graduation gowns. The Grad cap measures 9'4"sq, and is designed with elastic trim at headband for a snug and comfortable fit. Gradshop offers a variety of tassel colors at discount prices, so go ahead and order the whole kindergarten outfit for big online savings and great delivery options.