This is a set of a TUSA mask and snorkel. (Includes instruction manual) I used it for snorkeling only once, and then washed and stored it. I think it's in good condition, but it's still a used item, so please refrain from purchasing if you are sensitive to this. 【Product Description】 ◆What is the ZerO series? When snorkeling or skin diving (freediving), you may unknowingly feel stress due to the usage environment or incorrect handling of the equipment. The ZERO series is a product series that reduces such various stresses as much as possible and pursues unprecedented comfort. ◆Mask Features High-quality, highly transparent, safe and secure silicone is used in all products. The fit is very good, and comfort lasts even when used for a long time. ◆Snorkel Features All products use an innovative dry top that prevents water from entering the pipe. It ensures safe and comfortable breathing at all times when hit by waves on the surface or when freediving. ◯For our customers to use with peace of mind zero series "5 commitments" ・Support Peace of Mind Various replacement parts are available for long-term use. An after-sales support center to answer your questions after purchase. ・Safety Safety Certified by the international quality management system standard IS09001 Strict in-house (standard) inspections during development, production, and shipment ・Comfort Comfortable Ergonomically designed for ease of use and less fatigue Shape with low water resistance based on fluid dynamics ・High Quality High Quality Carefully selected materials that are gentle on the skin and safe to use High-quality materials with excellent durability and weather resistance ・High Performance High function Product development based on advice from professional divers Functionality that feeds back diving equipment development technology zero "O"Series Mask + Snorkel Set Diving Snorkeling Underwater goggles Scuba