New [Swans] Sports Sunglasses Airless-Core SACR-0051_BK Made in Japan Po !

Polarized Lens 0051 BK: Polarized Smoke/ONE/SACR-0051_BK Color: 0051 BK: Polarized Smoke Style: Polarized Lens Package Quantity: 1
・Frame color: Black x Black
・Lens Color: Polarized Smoke
・Visible light transmittance: 27% Suitable for sunny to cloudy days
・UV protection rate: over 99.9%
・Size: Height 4.2㎝ Width 14.1㎝ / Weight: 20g
[Product Description] Airless-Core is a lightweight sports model that combines a lightweight and flexible nylon frame with SWANS' unique polycarbonate lens with excellent impact resistance. There are a wide variety of lenses to choose from for various scenes. Because it is lightweight it is not tiring even when worn for a long time and is recommended for running marathons driving etc. The nose pad allows you to adjust the fit to your liking. [Brand Introduction] SWANS is a domestic brand produced by Yamamoto Kogaku Co. Ltd. founded in 1911. Based on Japanese head data the product design is suitable for Japanese people and the technology to control light cultivated over more than 100 years of history has led to the products being supported by many top athletes both domestically and internationally. [What is visible light transmittance] It is a numerical value of the amount of light that passes through the lens. It is displayed from 0% to 100% with the state of the naked eye being 100%. The lower the number the darker the lens is which does not pass light. [What is polycarbonate] The polycarbonate used in SWANS sunglasses is a resin with excellent impact resistance and transparency and is also used in aircraft windshields and space suit helmets. It is highly impact resistant and does not break easily and even if it does break it will not shatter making it a highly safe material for sports sunglasses lenses. SWANS uses a unique lens called Petroid Lens that is scratch-resistant and based on this polycarbonate. [What is a polarized lens] The polarized function effectively cuts out diffusely reflected light (polarized light) from various objects such as roads water surfaces windows cars and buildings reducing glare. The lens cuts out unwanted light allowing you to see the scenery clearly and making it less tiring to wear for long periods of time.