UV- AND CHEMICAL-RESISTANT polypropylene skin and filler absorb oils but repel water-based liquids IDEAL FOR SKIMMING OIL off acid or caustic baths or for use in other acidic environments MEETS ANSI AND MIL-SPEC standards for static decay ATTACHED STRING allows socks to be tied down, tied together or dipped into tanks TOUGH ENOUGH for acid baths and phosphates tanks PIG SKIMMER SOCKS FLOAT at the surface for easy retrieval ABSORBS AND RETAINS oil-based liquids - including lubricants and fuels - without taking in a drop of water