Rifz Knitted Fitted sheets are made of a comfortable yet durable blend of 55% cotton and 45% polyester. We offer in a few different weights and designs to meet your needs. These fitted sheets come in three different colored hem threads and weights as well as in a popcorn weave. Our Stretcher Sheets are made of the best quality blend of 55% cotton/ 45% Polyester. This product comes in 21 OZ weight and is white with ceil blue.