78% Polyamide (Recycled) & 22 % Elastane (Italian Imported). The Lauren wetsuit is designed for the active woman. Long sleeves for UV protection, 50 SPF,also serves as a rash guard when surfing. Sizing - This suit runs a size small. We suggest sizing up. Rinse in cold water after wearing to remove some chlorine, saltwater, sunscreen and/or natural body oils. Hand-wash.