<http://schema.org/weight>
"345 grams (12.2 oz)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.newbalance.com/pd/new-balance-759/WW759.html?cgid=40075&srule=By%20Price%20%28High-Low%29&dwvar_WW759_color=Sand&start=14>