Fit & Sizing: True to size. OrthoFeet shoes are designed with a wide toe-box and microfiber and fabric uppers to eliminate irritation and enhance comfort. Includes premium orthotic insole and arch booster in every shoe for innovative comfort, arch support, and advanced pain relief. Orthofeet shoes have unmatched cushioning and benefit 20+ conditions including foot and heel pain, plantar fasciitis, diabetes, arthritis, bunions, achilles tendonitis, hammer toes, and more. The heel cushion and ergonomic sole enhance walking comfort and add a spring to your step, while the rubber outsole offers advanced grip and excellent stability. Our innovative Tie-less system helps you move quickly with easy on / off wear while providing orthopedic comfort for pain-free walks. Rubber sole. 100% Synthetic.