Features & Benefits of the Vionic Hannah Women's Ballet Flats with Arch Support: - Leather or Nappa upper, injected Insole, rubber outsole. - YOUR NEW FAVORITE FLATS: Hannah's a classic ballet beauty with support that will surprise you. Rounded toe, metallic heel accent, buttery Nappa leather. - VIO MOTION SUPPORT: The Most Supportive Shoes Ever. Our Vio-Motion Support includes Three-Zone Comfort with Ultimate Arch Support for a difference you can feel. - VIONIC SHOES: Vionic brings together style and science, combining innovative biomechanics with the most coveted trends. - Vio-Motion Support is an innovative approach to foot health: Vionic conceals biomechanical technology into each shoe. All-day comfort is a difference you can feel. - Deep heel cup provides essential stability. - Contoured orthotic footbed for addictive support - Vio-Motion Support is designed to provide you with proper alignment, which can help reduce common aches and pains by aligning you from the ground up.