OTTO 958 collaborates with Asics Sportstyle on the Gel-SD Arzachotto in Dioptase | Black. A laceless slip-on upper, constructed with a shell-like outer and a soft and enveloping interior, delivering a sculpted, enclosed feel. FLYTEFOAM PROPEL cushioning provides advanced impact absorption and a responsive bounce. Finished with a rubber outsole for traction and signature Asics branding. Men's US sizing Asics Sportstyle product code: 1203A925.300