The SIze is unknown but the measurement are in the picture This G2 Full Face Snorkel Mask by Greatever is the perfect addition to your snorkeling gear. Designed with the latest Dry Top System, this mask offers a comfortable and secure fit for all your underwater adventures. Made in China, this high-quality mask is built to last and provide you with a clear view of all the amazing marine life beneath the waves. With its foldable design, this mask is easy to transport and store, making it perfect for all your travels. Whether you're a seasoned snorkeler or just starting out, this G2 Full Face Snorkel Mask is a must-have item for anyone who wants to explore the ocean in style.