<http://schema.org/weight>
"468 grams (16.5 oz)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.newbalance.com/pd/hook-amp%3B-loop-928/MW928-V.html?dwvar_MW928-V_color=Black&cgid=102000&prefn1=sizeRefinement&start=10&prefv1=men_shoes_16>