These days, it seems like microfiber is cropping up in everything from clothing to bedding. But what is the deal with it, anyway? Essentially a synthetic material, microfibers are 100-times thinner than human hair, preventing things like dust mites and allergens from collecting in the weave. Breathable and stain resistant, when brushed it makes a fabric that is softer and more durable than cotton. If science is going to make our bedding more comfortable, we're all for it. This set contains two microfiber pillowcases that are machine washable and hypoallergenic. So go ahead – snooze in science.