Synthetic fleece is something of a modern miracle. It keeps us warm and cozy, is easily cleaned and doesn’t even require we harm any animals to make it. Perfect, right? Well, every miracle comes with a price.It turns out that every time we wash one fleece pullover or jacket, we’re sending about two grams of plastic microfibers out into our environment. Where those fibers end up from there is a bit concerning, because you’re probably eating them.