The spark lace up; designed to support the natural movement of your body, its anti-microbial, moisture wicking treatment makes this perfect for all day wear. Its high energy return eva foam midsole provides support and superior cushioning • bounce plus: our high energy return eva foam midsole combines with our advanced insole for added support and superior cushioning, returning energy as you move. Recycled rpet mesh lining • aegis anti-microbial linings withing the shoe kill microbes on contact, protecting your feet from bacteria • heel height approximately 50mm • upper: knit and tpu; lining: rpet (recycled polyethylene terephthalate); sole: eva • care instructions: wipe clean only • heel height: 5.0 cm.