<http://schema.org/weight>
"17.9 oz"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.newbalance.com/pd/dunham-burlington-waterproof/MCT410.html?cgid=111000&prefn1=size&dwvar_MCT410_color=Brown&start=1&prefv1=10.5>