QUANTUM & ITACA ULTRA DRY Combo Set [Quantum & Itaca] Used for snorkeling in the ocean about 3 or 4 times. There are no noticeable stains or scratches, and it is in good condition. I am selling it because I am decluttering. Please understand that this is a used item and has been stored at home by a private individual. Also, please ask any questions you may have beforehand. To avoid any problems, we cannot accept returns after the product has been purchased. I have many other items for sale, so please take a look. Thank you. The following is product information. Combo set list price: 34,650 yen ◾️Quantum: Cressi's unique patented technology, "Fog Stop" and "Heat exchanger," prevent the lenses from fogging up. "Fog Stop" is a mechanism that prevents hot air from the nose from hitting the lenses by placing a barrier around the nose pocket. "Heat Exchanger" lowers the temperature of the lenses to prevent fogging. ◾️Itaca: This is a dry snorkel with two valves. There is a drain valve at the bottom to release accumulated water. There is a floating valve at the top to prevent water from entering. ◾️Specifications ・Materials Quantum: Silicone (W injection) Reinforced glass Itaca: Silicone, plastic ・Target use: Scuba diving, snorkeling ・Target users: Suitable for beginners to advanced users. ・Patents Quantum: Fog stop system (anti-fog) Heat exchanger (heat dissipation function) Itaca: (Valve on the tube) ◾️Other Quantum: 2022 latest model Itaca: 2020 model Itaca is especially popular with beginners because of its structure that makes it difficult for water to enter. It is especially good for beginners because there is no need to drain water.