Worlds Best Yia Yia Grandma T-shirt Mothers Day Gift Solid 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 Tell your grandmother she is special with this cute Worlds Best Yia Yia grandma shirt for her birthday or Mothers Day. Cute gift ideas for Greek grandmothers have unique vintage style logos. Lightweight, Classic fit, Double-needle sleeve and bottom hem