Choose greatness with the Skechers GOwalk 4. Features innovative 5GEN midsole design and an advanced nearly seamless one piece mesh fabric upper, with new Skechers Goga Max insole, for the most advanced walking experience ever. Fastening:Slip on Material Composition:Textile/Mesh/Rubber 5th Generation design provides a high energy return on every step.. Nearly seamless construction for comfortable fit.. Bamboo lined footbed for anti bacterial odour control.. Athletic mesh fabric upper.. Air mesh side panels with fabric underlay..