Need to ripen up an avocado? The best way to ripen them up is to tuck them into a cosy wool sock! Never tried it? then it's definitely time! The Avocado Sock produces wool socks that are specially made for avocados. The socks are made in Canada and are an environmentally friendly, back-to-basics product that is made of 100% Shetland wool. The socks feature a suede label, a microfibre drawstring cord with a leather look and a pretty paper tag. The paper is printed with soy ink.