Scubapro Ecco snorkelling setThe Ecco dual lens mask offers a good field of view to enjoy the underwater sights, low volume so its easy to clear, and a liquid silicone skirt thats both comfortable and keeps water out. The mask comes with an easy to use snorkel with splashguard top and a purge valve positioned just below the mouthpiece for effortless clearing. This is a great combo for snorkeling aficionados. The dual lens design is low volume and offers good field of view. Mask