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KastKing FlatRock Polarized Sport Sunglasses for Men and Women, Ideal for Driving Fishing Cycling Running, UV Protection

  • Based on 1,058 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Sep 1
Order within 2 hours and 7 minutes
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Color: Frame:gloss Crystal /Lens: Smoke


Features

  • KEY FEATURES Oleophobic lens coating repels saltwater, oil, and chemicals - Polarized lenses reduce glare - Impact resistant TAC lenses protect your eyes from flying objects - Block 100% of the harmful UVA and UVB rays - Super Lightweight, durable, and flexible Grilamid frames
  • OLEOPHOBIC LENS COATING Our oleophobic lens coating creates an oil resistant, anti-fingerprint surface that is impervious to dirt, dust, oils, and other particles resulting in a surface that is easy-to-clean and maintains a cleaner lens longer than untreated lenses. 1.0mm polarized lenses are comparable to the thickness you would find on much higher priced sports eyewear. KastKing Polarized sunglasses help reduce glare caused by reflected light to improve vision and comfort.
  • SUPERIOR AND SUPER LIGHTWEIGHT FRAMES Made from the same Grilamid material commonly used by the military and in medical applications, our frames are greatly lightweight, extremely flexible, and heat and UV resistant. Grilamid frames are well known for their strength, lightweight comfort, shape integrity, and impact resistance. This ultra-lightweight and malleable material translates to a very comfortable fit.
  • BASE LENS COLOR and UV PROTECTION Smoke lenses are ideal for bright sunlight with the most realistic color reproduction and work well in medium light and partial shade. Brown lenses increase contrast and depth perception, ideal for cloudy to sunny conditions. Copper lenses were best suited for moderate to low light. Green performs well in sunny to overcast conditions. KastKing sunglasses block 100% of the harmful UVA and UVB rays and meet or exceed all U.S. ANSI standards.
  • PROTECT YOUR EYEWEAR KastKing sunglasses include a molded custom hard case for storage and a custom Prym1 Camo microfiber pouch which can be used for cleaning as well as storing your sunglasses. To avoid lens scratches and lens coating damage, clean your lenses with a clean microfiber cloth or lint free cloths and fresh warm water. Never dip them in saltwater or dry with a paper towel.

Item Package Dimensions L x W x H: ‎6.61 x 3.15 x 2.72 inches


Package Weight: ‎0.11 Kilograms


Brand Name: ‎KastKing


Color: ‎Framegloss Crystal /Lens Smoke


Material: ‎Plastic


Suggested Users: ‎Unisex Adult


Style: ‎Sports Sunglasses


Size: ‎Standard


Sport Type: ‎Outdoor Lifestyle, Fishing


Date First Available: September 22, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Dollar for dollar these are unbeatable!!!
Color: Frame: Gloss Tal Dark Olive /Lens: Green...
For the price, these are hard to beat... I didn't think you can beat them! I actually bought a second pair, different tint/lens lady week when they were on sale for $26.99 which is a ridiculously good deal!!! I currently have 3 pairs of Costas (I've had more at least 3 more pairs in the last 20+ years) and I can't really see a difference as far as vision in the water. The frames is the Costas are better, stiffer, stronger, etc, (the frames of Costas are not nearly as good as they used to be before they got sold and started being made in China around 10 years ago) but as far as blocking sunlight reflection on the water and visibility I can't really see any difference. I mean for $30, you can buy about 7 pairs of these for the price of 1 pair of Costas. I highly recommend these glasses if you're a fisherman and don't want to spend $200+ for a pair of polarized glasses. I still sometimes wear my Costas and polarized Oakley's but that's because they are prescription lenses (I'm nearsighted), but for the last month when I'm wearing my contact lenses I wear these. ... show more
Reviewed in the United States on May 20, 2025 by Dr Blazer

  • Great fit finish and feel
Color: Frame: Gloss Tal Gray/Lens: Smoke - Blue...
These are my favorite sunglasses currently. I like the look of the frame style and colors. The lens’s are perfectly dark in opinion, while still being able to allow you to see through the water. They are decently durable I haven’t been able to break the arms, but the lens’s do scratch somewhat easy. I think they fit great and the material isn’t uncomfortable in sweaty or wet situations like cheap rubberized matte glasses are. ... show more
Reviewed in the United States on June 5, 2025 by Scott

  • Awesome Shades!
Color: Frame: Gloss Black/Lens: Smoke - Chartre...
I bought a pair of these a year ago because a brand that I used to buy which I will not name but rhymes with Foakley kept breaking. I will not buy anything else now. These glasses are light, durable AF, and a great fit! I bought a 2nd pair just in a different color and seriously could not be happier! ... show more
Reviewed in the United States on June 11, 2025 by RedSea99

  • Good value for the price
Color: Frame:gloss Tal Light Blue /Lens: Smoke ...
These glasses are a home run so far. Had them maybe a month great for golf very light weight look nice let's see how durable they are
Reviewed in the United States on April 26, 2025 by Scott

  • Racks right up there with the expensive polarized sunglasses
Color: Frame:gloss Black /Lens: Smoke
I got these for my husband who normally wears the Rayban polarized sunglasses. He is impressed with these glasses as they are lightweight , a real polarized lense and dark lense. He would definitely put these against his raybans. Great job with these sunglasses especially at this price !
Reviewed in the United States on June 3, 2025 by Amanda Canfield

  • Outstanding Performance and Comfort
Color: Frame:gloss Tal Light Blue /Lens: Smoke ...
I’ve worn a lot of sunglasses over the years, but these from KastKing are hands down my favorite. The lens coating is sweet. It repels everything. I spend a lot of time near water, and these lenses stay much cleaner than others I’ve tried. The polarized lenses reduce glare significantly regardless if I am fishing, driving, or playing sports. The lenses are very durable. These sunglasses are very lightweight and comfortable. Lots of color options and I am thankful for the 100% UVA and UVB protection. They also come with a hard case and a microfiber pouch which makes cleaning and storing easy. Overall, these feel like premium sunglasses without the premium price. ... show more
Reviewed in the United States on May 1, 2025 by Troms

  • Stylish, nice quality and great value sunglasses!
Color: Frame: Gloss Fuchia Horn/Lens: Green Gra...
Very nice and stylish polarized sunglasses, especially for the price. I bought these for my wife who didn’t have sunglasses that were polarized, now they’re her favorite pair. She says they feel lightweight and comfortable on her face, and the polarized lens really enhances her view. I also bought a pair for myself in a different style from this brand, great quality! ... show more
Reviewed in the United States on May 21, 2025 by Maticus Maticus

  • Good glasses
Color: Frame: Gloss Demi/Lens: Brown - Chartreu...
My favorite sunglasses. It’s hard for me to find glasses that fit and don’t rest on my cheeks but these are great. And comfortable to be in all day. My only complaint is the coating on the lenses is not very robust. After about a year of wear the coat is starting to flake off the lenses but at the price point I guess I should expect corners to be cut. ... show more
Reviewed in the United States on April 23, 2025 by chris albright

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