Innovatively designed with next-level comfort and style; part of our best-selling ProWalker collection Exclusive to Rockport, our activSOLE is a single-density footbed which gives you long-term comfort across the length of your foot truTECH and a removable PU footbed provide flexible, lightweight impact absorption Approximate wedge height at back heel: 1 3/4 inches A grippy, lightweight outsole has treads with more surface area for greater stability on most surfaces. Color: red