While you want a snug fit and the 9" encasement will stretch to fit an 11" mattress, you may want to go with the 11" deep encasement to ensure to rips or tears when putting it on or from pulling that will occur over time as you move on the bed. We do have the ability to get the smooth top encasements for you but you will need to call us to place an order for this as it is not one we keep on our shelf at all times. The terry cloth is the most common which is why we only have it listed on our website. The
Standard Size Pillow Encasement will be the closest fit to your pillows. The cover will still be a little large but will work fine since as you lay on the pillow the size will change inside the encasement. Please let us know if you have any other questions.