Vincent Van Gogh Vase With 12 Sunflowers Throw Pillow Case 18x18 diy pillowcase Type: Pillow case. 100% Brand new and high quality. The Pillowcase material is 50% cotton , 50% polyester. Decorate your bed or couch with a cushion in this 18 x 18 inch Penny-Farthing Cushion Case Custom stylish, fashion pillow cover for every customer creative fashion hold pillow back cushion, let our life more comfortable and happy.