Vionic Perk Blaire - Women's Strappy Heel. With its snake pattern embossed leather upper, metal buckle detail, three straps across the vamp plus an ankle strap for extra support, Perk Blaires mod block heel is sure to become a wardrobe favorite. 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.