... lens, plastic frame, silicone skirt & adjustable strap. 2.Professional diving mask for adult Diving Mask:1) Lens: Tempered ... Glass, Skirt: super soft silicone, Strap: super soft silicone.2) ... ) Payment Term: T/T Product Name Diving mask MaterialSilicone skirt and head strap, plastic frame, ... bag, carton outside Best and cheap silicone mask for diving