Remember the Do Just One Thing tip about plastic microbeads in body washes and how they end up being gobbled up by aquatic wildlife? The same can hold true for our soft, cozy fleece sweatshirts. When you wash your fleece jackets and pullovers, small nylon fibers end up shedding and going down the drain. These tiny strands are just like microbeads -- they get caught in the aquatic food chain. If you want to avoid contaminating the food supply, try two things: Hand wash your fleece items in the sink and capture the strands with a fine mesh cover, or look for alternatives like wool, which have fibers that are natural and biodegradable.