Real customers testify share their stories about why they switched to the Casper pillow. Traditional, memory foam, latex, bamboo and down-filled pillows all failed to help these customers sleep soundly, so they opted for the dual-fiber Casper Pillow. The Casper Pillow is two pillows in one: the inner pillow is made up of springy, adaptive fibers and the outer pillow is filled with softer fibers. One satisfied man sleepily says that the combined power of these fibers makes his pillow feel like marshmallows! Because Casper guarantees that this pillow will satisfy all sleepers in all sleep positions, it offers a free trial of 100 nights to interested customers.