Beautiful pillow case. Super soft and top of the line materials. You will not be disappointed in these. The center is 100% polyester. The center measures 17x17 and has a hidden zipper. For the best look I recommend size 11x17 sublimation or the 8.5x14. In the picture shown I used a 11x17. Temp 400 at 60 seconds and use teflon sheet in between the pillow case to keep it from sticking together. Super easy to press and makes a beautiful pillow for any home. I'm offering these in a single option and bulk options, please use drop down menu for your selections.