The Nike Air SPARQ TR training shoe was designed with the physical demands of SPARQ and Dynamic Training in mind. Unique breathable upper with streamlined synthetic overlays offers great fit. Visible Max-Air unit encapsulated in Phylon adds the perfect blend of cushioning. Non-marking solid rubber outsole with mulit-directional tread. TPU midfoot shank provides torsional rigidity. Wt. 7.3 oz.