The General Purpose Absorbent Sock has knitted outer skin which allows liquids to be absorbed faster and more efficiently. The ultra-absorbent filling will retain the liquid it has absorbed. The knitted cover means this sock has the ability to expand, which means that a 1.2-metre sock will absorb up to 5.4 litres and a 3.0-metre sock will up to a massive 13.75 Litres. This is much more than other socks on the market, giving superb value for money.