<http://schema.org/weight>
"305 grams (11 oz)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.newbalance.com/pd/hook-and-loop-577/WW577-V.html?cgid=40057&prefn1=genderAndAgeGroupCombo&start=8&prefv1=Unisex%7CWomen&dwvar_WW577-V_color=White>