Polarized Sunglasses Clip-on Type with Storage Bag Color: Gray Weight: 9g * Clip-on type for your existing glasses These are functional lenses that suppress glare with a special film. They reduce the reflection of light from water surfaces and snow surfaces. Reflected light from snow and water surfaces makes the entire field of vision dazzling and reduces visibility. They block scattered light and provide a clear view with high contrast. By wearing polarized sunglasses, you can enjoy snow sports such as skiing and snowboarding without stress, even at the water's edge or in the mountains. They are also recommended for running on concrete with strong glare and for golf. What are the disadvantages of polarized lenses? Polarized lenses can sometimes make things appear more difficult to see, and they may deteriorate more quickly depending on the environment in which they are used. The lifespan of polarized lenses is 3-5 years. The iodine in the polarizing film weakens when exposed to ultraviolet light, leading to aging, and the lifespan is often about 3-4 years. Also, if the polarizing film is sandwiched between the lenses, air and moisture can enter the filter layer and cause deterioration. When the lenses change color or lose color, it's a sign of the end of their lifespan, and it's time to replace your glasses or sunglasses. I can't live without my glasses, and I enjoy fishing, but I was always looking for good sunglasses. When I wear sunglasses, it becomes difficult to see, and I don't want to spend that much money on prescription sunglasses. I was always looking for something like these clip-on sunglasses that can be removed as needed and are also polarized lenses, suitable for fishing. Then I found these sunglasses, and I now keep them at home and in my car. In addition to seeing the underwater conditions, I can also see the fish and squid chasing the worms, and I find fishing even more interesting. I want everyone to share this feeling. * Cases etc. are not included. They will be packed in cushioning material and shipped. Frame Shape: Other Lens Color: Brown Type: Sunglasses Lens Features: Polarized Sunglasses Lens Color: Gray