Ryka Influence jazzercise zumba athletic sneaker Synthetic & mesh. Textile lining and a cushioned, removable Precise-Return™ insole for comfort and impact protection. N-Gage EVA midsole returns energy on impact and provide more shape-retention than traditional EVA. Medial post on the midsole provides additional support under the arch. Footprint design on the outsole follows the biomechanics of the foot and offers outstanding traction and support. Excellent condition. Does not come with box.