Flexible socks stop and absorb water from leaks, drips, and condensation without growing mildew. 100% polypropylene skin resists tearing and reduces dust and holds in liquid, even when fully saturated. Filler resists the growth of mildew unlike cellulose absorbent socks. Great for use in the basement and garage where water seeps . Place them in front of freezers, coolers and more to catch leaks and condensation where they show up. This lightweight, water absorbing sock is designed to quickly absorb and retain water. Do not use it in washing machines or dryers as the sock may become damaged in the process or the filler may become loose in the machines. Absorbent Socks should lay flat to air dry only. Socks should not be in direct sunlight. Prolonged UV exposure will cause degradation.