Vionic Perk Whitney - High Heeled Ankle Boot. Vionic's signature ankle boot silhouette gets an upgrade with Whitney, featuring the perfect combination of cow suede and neoprene to give you all the stretch you need for everlasting comfort. Full-contact support hugs your foot's curves. Vionic's Elevated Support technology gives you comfort and style in their wedges and heels. Heel seat stabilizes and positions foot. Stylish and comfortable footwear that incorporates a podiatrist designed biomechanical orthotic. New without box