Anna Nucci Brand - The Original EVA Sandals - Amphiis like an amphibian – In & Out of Water at its Best - Anti-Slip - Waterproof - Non-Toxic - Shock-Absorption - Soft Cushioning - Good Resilience - Superb Lightweight - Resistance to Crack - Anna Nucci Amphiis® uses US patented (Ethylene Vinyl Acetate Copolymers) material - The shock-absorption qualities protecting the foot and ankle from the impact that comes from the foot striking the ground. The supportive nature of EVA material is suitable in relieving foot pain. Your feet and calves will be free of pain and discomfort all day long.