<http://schema.org/weight>
"312 grams (11 oz)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.newbalance.com/pd/new-balance-756v2/MWM756-V2.html?cgid=102000&start=21&dwvar_MWM756-V2_color=Black_with_Light%20Grey>