A combination of ACTEVA and ABZORB in the midsole T-beam is a lightweight, flexible TPU shank engineered to deliver optimum torsional stability and arch support through a unique center beam design 10 mm drop: due to variances created during the developMent and manufacturing processes, all references to 10 mm drop are approximate Engineered mesh Dual density midsole model number:M860GR8 Brand New Balance SKU 100394171_NP-1020694236