Highly absorbent mini booms meant to be used in the boat bilge to absorb oils and fuels from contaminated bilge waters to prevent pollution into marine waters.  Another popular use is in machine shops to set on top of machine coolant tanks to absorb tramp oil that floats on the coolant water. Since they have a small rope at the end they can be tied down to keep still. They come in sizes 5"x15" and 8"x18".