From Ryka, the Women's Distance LX Mesh Running Sneakers feature: Breathable engineered mesh upper RYKA SHIELD stain protectant Adjustable lace up closure Padded tongue with built in pull tab Padded heel Heel pull  Breathable hung fabric lining High abrasion collar lining for longer wear  Linings with anti-odor and anti-microbial treatment Anatomical QInsole for arch heel support Lightweight QFoam insole for soft cushioning and high energy Molded heel stabilizer  Synthetic outsole Imported.  Sizing note: This shoe runs slightly large. We recommend sizing down 1/2 size for the best fit