FDA tested silicone strap and skirt - Our mask is equipped withFeatures an FDA-approved silicone skirt that meets industry-leading quality requirements.eating.It is environmentally friendly and healthy, and provides a very comfortable wearing feeling. Safe and comfortable-durable, anti-scratch, unbreakable, shockproof, can withstand harsh weather conditions.deep water pressure and impacts from sharp or hard objects, 100% safe. A quality 3mm neoprene mask strap.and a soft neoprene mask strap are used to prevent hair tangles and provide added comfort. Rimless and small in size unlike traditional PC frames, we use advanced technology to directly manufacture tempered glass lenses.with silicone coating.Avoid splashing water at the joint between the lens and the frame.The frame and micro-lens make our mask small and lightweight. Very suitable for&àgrave;snorkeling and scuba divingfun fishing, in fact, only this frameless mask withLow volume is the perfect choice for snorkeling and underwater fishing.Of course, it is also an ideal choice for users who need a high level of experience in diving, snorkeling and swimming.