Vionic | Shoes | Vionic Navy Blue Sandals With Modern 。Features & Benefits of the Vionic Dennis - Men\'s Orthotic Sandal Excellent support and traction make these ideal for travel.Uppers: leather.Footbed: EVA.Outsole: Durable Rubber.Our innovative podiatrist-designed Orthaheel Technology provides superior orthotic support, relief and stability which helps realign the feet back to their natural position.Research supports Orthaheel Technology\'s success in reducing over-pronation, which can help relieve associated common aches and pains, such as heel pain (plantar fasciitis), knee pain and lower back pain.