Two piece pillowcase set includes two jolly seals—one wide-awake, the other snoozing away—with an envelope-style closure to preserve your pillows during all the flipping, flopping, and pillow-brawling. Crafted from lush, 230 thread-count sateen cotton and Oeko-Tex certified, you can rest assured that these special pillowcases are free of nasties.. Dimensions: standard pillow size 20 x 26 in / 51 x 66 cm