Genuine replacement for Cressi scuba diving and snorkeling masks. Made in pure flexible and comfortable silicone. Split strap design for a secure fitting on the head. It is recommended to rinse with clear water the mask after use. Do not use bleach or chemical products. Let it dry under shadow and never under the direct sun rays. The strap is compatible with the following masks: A1, Action, F-Dual, F1, F1 Small, Liberty, Liberty Duo, Liberty Quattro, Liberty Triside, Metis, Pano 3, Pano 4, Ranger, SF1, Z1, ZS1. The mask replacements are designed in Italy by Cressi and made in Taiwan. Cressi has been an Italian brand pioneer in scuba diving, snorkeling, and swimming equipment since 1946. The product is covered by a 2-year limited warranty.