From Dansko, the Women's Penni Mesh Sneakers feature: Recycled mesh upper treated with 3M Scotchgard protector for stain resistance, lace-up closure with toggle slide keeper, recycled textile linings treated with Aegis Shield odor control, Dri-Lex recycled textile socklining for moisture management and Aegis Shield odor control, Dansko Natural Arch Plus technology for added arch support and heel stability, and removable, energy return EVA footbed with heel shock absorption pad and Propel forepart