Wide King Size Pad Integrated Box Sheet Microfiber Choose Your Sleep Comfort Pad and Sheet Series .Microfiber Microfiber is popular for its warmth. Easily improve your sleeping comfort Just put it on and you'll feel a huge difference in warmth! It's affordable and you can easily feel the softness of microfiber, so I recommend it. It's comfortable and really warm. Packed with fine, ultra-fine fibers It's fluffy and soft because it's packed full. Smooth and silky to the touch. Plenty of air in the gaps between the fine fibers It contains a lot of moisture, so it's light but very warm.