Professional Slip Resistant Shoes made per ASTM Industry Standard - The White House Chefs Endorsed Sponsor Kitchen Shoes. Genuine Leather, Vegan Leather, or Breathable Mesh Fabric Material Upper. Inspired by Performance Athletic Styles, with Addition of Slip Resistance and Ventilated Lightweight Design, We Make Every Step Easier.Non-Marking Rubber Sole. US Patent No.D808624, Special Designed Shape and Pattern to enable Units to Channel Fluids and Penetrate Hard Slick Surfaces to Increase Ability to Resist Slipping. Removable Insoles are Supportive and Comfortable for Long Time Stand and Walk and Work. Heel Measures Approx. 1.5" with Platform Approx. 0.75”. Full Size Range From 5 to 13 US Women Size, Available for Both Medium and Wide Width.