Ultra Soft and Comfortable: With a softer than cotton feel, the pillow cases ensure maximum softness and breathable comfort, wrinkle free Super Stretchy: Jersey knitted microfiber with 4-way stretch to fit both 20x36 and 20x40 king size, a great extra addition to match with our stretch sheet or your own regular bedding Envelope-style Design: The pillow cases are designed to an envelope closure on the end, not only fit well and look great, but also sew up quickly and no more escaping Easy to Care: Machine washable to keep fresh and clean, wrinkle and fake resistant. Durable and stylish, NO zipper & convenience Set Included: Pack of 2 white pillow cases king size