Custom Austin Mahone Pillowcase Standard Size 20x30 Cotton Pillow Case P1558 Custom Picture Pillow Cases 20" X 30" (one side). Made of 50% cotton, 50% polyester. The custom pillow case is without buttons,and has an opening on the side Having this soft custom pillowcase will add both comfort and style to your home. Nice hand feel due to top material with high quality.