Yotopzy Diploma Cover 8.5“X11” Graduation Diploma Holder Certificate Covers Leatherette Padded. Size: The Diploma Cover is designed to hold one 8.5″x11″ certificate or Diploma. 【Premium Diploma Holder】 The cover is crafted from high-grade artificial leather with a smooth, firm texture that resists dirt, wear, and water—ensuring lasting protection and elegance.