Vionic Spruce Sullivan - Men's Leather Dress Shoe. Sophisticated style never felt so comfortable with Spruce Sullivan, a modern full-grain leather slip on accented by fine stitching details, a structured rubber outsole and slim twin gore panels. Contoured footbed for addictive support. Orthaheel technology helps promote alignment from the ground up. Deep heel cup provides essential stability. Stylish and comfortable footwear that incorporates a podiatrist designed biomechanical orthotic.