Vionic Women's Flex Sierra Lace-up

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The Sierra Active Sneaker by Vionic showcases an bio-mechanical designed knit upper for added ventilation and a dual-density rubber out-sole for great traction underfoot. Add some pep to your step with this revolutionary blend of style and technical features. 


Advanced Motion System (AMS) technology, combined with Vionic's podiatrist-designed orthotic Orthaheel Technology for superior comfort and mobility you can never resist.


  • Knit and man made lightweight breathable uppers
  • Firm yet flexible, removable textile-covered EVA orthotic insert with durable rubber outsole.
  • Recommended by Dr. Andrew Weil.



  • We recommend wearing your new Vionic footwear for just a few hours for the first few days to allow your feet to adjust to the new level of orthotic comfort and support for greatest comfort.
  • Break-in period of one to two weeks then you should find the product perfectly comfortable and supportive.

How To Care:

  • Wipe with damp cloth to clean
  • Air dry under indirect sunlight only.
  • Don't submerge in water
  • Don't use solvents to clean products.