The OMI 3” organic wooly topper is perfectly suited for the sleeper who needs just a little extra surface cushioning. Made with certified organic wool and organic cotton our pillow tops offer a welcome layer of plushness. Organic wool is a wonderful natural choice for a sleep surface. Cool in summer and warm in winter, it wicks away moisture and dissipates it into the air over time. Covered in certified organic cotton sateen fabric, OMI's pillow tops add a luxurious feel to any mattress.