The Archline Orthotic Flip Flops are the World’s Most Comfortable Thongs. They are Super Lightweight, Comfortable and Waterproof. The signature ARCHLINE Orthotic Base is super comfy and is perfect for foot pain, flat feet, heel pain, arch pain, plantar fasciitis, overpronation and many more foot conditions. These thongs are super comfy to wear and can be worn anywhere – the beach, around the home, on the street. Podiatrist Recommended. Arch Support Orthotic Thongs Super Lightweight Comfy Arch Support Sole Fully maps the soft tissue muscle of the foot (plantar fascia muscle) Made from EVA (base) and TPU (strap) Designed to provide orthopaedic comfort and relief for wearers Durable and lightweight Anti-wear, Anti-bacterial, washable EVA base Non irritative strap, skin friendly