KastKing FlatRock Polarized Sport Sunglasses for Men and Women, Ideal for Driving Fishing Cycling Running, UV Protection
Condition: New
Buy Now, Pay Later
As low as
$6
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Monday, Aug 10
Recently Viewed
Color: Frame: Gloss Demi /Lens: Brown - Chartreuse Mirror
Features
- KEY FEATURES Polarized lenses reduce glare - Impact resistant TAC lenses protect your eyes from flying objects - Blocks 100% of the harmful UVA and UVB rays - Lightweight, durable, and flexible Grilamid frames
- PuriVex PROTECTIVE COATING Exclusive KastKing PuriVex coating protects lenses from scratches while repelling dirt, oil, and water for easier cleaning and long-lasting clarity. The tough marine-grade coating helps prevent scratches and resists damage in harsh outdoor conditions, making these sunglasses ideal for fishing, driving, and other active sports
- 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
Color: Frame Gloss Demi /Lens Brown - Chartreuse Mirror
Item Shape: Square
Occasion Type: fishing, golf, hiking, running
Lens Color: Brown-Chartreuse Mirror
Style Name: Sports Sunglasses
Sunglasses Form: fit_over
Brand: KastKing
Age Range Description: Adult
Manufacturer: KastKing
Item Type Name: Sunglasses
Unit Count: 1 Count
Fit Type: Regular
Lens Type: TAC
Lens Coating Description: UV Protection Coating
Sport Type: Fishing, Outdoor Lifestyle
Ultraviolet Light Protection: Yes
Polarization Type: Polarized
Frame Material Type: Grilamid®
Lens Material Type: Tri Acetate Cellulose
Material: Grilamid®
Arm Length: 5.59 Inches
Bridge Width: 0.63 Inches
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Aug 10
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Color: Frame: Gloss Tal Light Blue /Lens: Smoke...
I purchased the KastKing FlatRock Polarized Sport Sunglasses for an upcoming cruise to the Bahamas and a fishing trip. I specifically needed blue mirror lenses for better visibility on the water, a comfortable and secure fit, and a good price—these sunglasses deliver on all fronts. The polarization is solid, cutting glare effectively while enhancing colors, making them ideal for fishing, boating, and general outdoor use. The lightweight frame is comfortable enough for all-day wear, and they stay put even during movement—no annoying slipping down the nose. I also considered Knockaround sunglasses, which I've used before, but I’m glad I went with the FlatRock style. The design works well with my long face and angular features, providing both a stylish and functional fit. For the price, these are an excellent alternative to more expensive polarized sunglasses, and they don’t feel cheap. If you need reliable eye protection for driving, fishing, cycling, or any outdoor adventure, these are a solid pick.
...
show more
Reviewed in the United States on March 16, 2025 by Will S.
Color: Frame: Gloss Tal Light Blue /Lens: Smoke...
I may have to try a KastKing spinning reel after wearing these (Normally a Penn guy) because the quality of these sunglasses is that excellent. Let's start with what's obvious; the looks. First, there's no mistaking these for cheap, off-the-rack shades. KastKing is clearly employing a higher-end manufacturing process to produce these, and at least for me this size is perfect. I want full coverage for my eyes (beach - surf fishing), and to me a lot of frames on the market appear to have been designed with a smaller head in mind. These are not like that. They're large enough to cover my eyes without being too big. They're also not "cat-like" which for my taste makes then more wearable. Next thing has to be the weight. Really wow. They're amazingly light. I can barely tell that I'm wearing them, and I love that they are pliable, a definite plus. Polarization, check ✔️. Mirror lens, check ✔️. Eye-soothing tint, ✔️. Comes with a great case, ✔️ Affordable price, ✔️. Seriously, I may just have to try out that spinning reel, but whatever the case I'm definitely a fan of the sunglasses. So much so, in fact, that I think I'll get a pair for my wife, too. KastKing, please take a bow. 👍
...
show more
Reviewed in the United States on June 19, 2024 by Bench Test 33
Color: Frame: Gloss Tal Gray /Lens: Smoke - Blu...
I bought the KastKing FlatRock Polarized Sport Sunglasses as part of my dad’s birthday gift, and they’ve easily become his favorite pair. He owns several other sunglasses, but he’s told me multiple times that they don’t compare to these. The clarity is great, the polarization works well for driving and being outside, and they’re comfortable enough for all-day wear. They also feel durable and well made, not flimsy. If you’re looking for a solid pair of polarized sunglasses that won’t break the bank but still perform, these are a great choice.
...
show more
Reviewed in the United States on February 21, 2026 by Amazon Customer
Color: Frame: Gloss Tal Gray /Lens: Smoke - Blu...
good fit nice for the price
Reviewed in the United States on February 23, 2026 by paul zenir
Color: Frame: Gloss Tal Light Blue /Lens: Smoke...
Wow!!!! My KK FlatRock Sunglasses are absolutely SWEEET looking!!!! All the social media advertising.....$$$ well well spent. Have to say - Bit better than my Oakley's. Correct on the light weight and fit. HIGHLY RECOMMEND. Definitely will be purchasing another pair ( Dif. color lenses and frame). Thank You!!!
...
show more
Reviewed in the United States on January 30, 2026 by Michael G.
Color: Frame: Matte Demi /Lens: Brown
Great fit, lightweight, very affordable.
Reviewed in the United States on March 1, 2026 by J Hubb
Color: Frame: Gloss Demi /Lens: Brown - Chartre...
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
Color: Frame: Gloss Tal Light Blue /Lens: Smoke...
Very durable. Looks great. I prefer these over oakleys and Fendi sunglasses. They also bend and are very well designed.
Reviewed in the United States on March 3, 2026 by TheHonestMan