<http://schema.org/weight>
"331.69 grams (11.7 oz)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.newbalance.com/pd/mid-cut-950/MU950-M.html?dwvar_MU950-M_color=Black&cgid=109000&prefn1=size&srule=By%20Customer%20Ratings&start=3&prefv1=6.5%7C8.5>