KastKing FlatRock Polarized Sport Sunglasses for Men & Women, UV Protection

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.

Nothing more to be said but buy these glasses. Durable, perfect fit, keeps the sun out of my eyes! 100% recommend buying !

They feel great, look amazing, fit perfectly, no glare, clear as day, kastking didn’t just kill it with rod and reels they killed it with the glasses too

This is my second purchase of the same glasses. Bought them last summer while working as a lifeguard. They are lightweight and comfortable, the polarizing effect is really good for how inexpensive they are. The frames themselves are durable but the coating on the lens was not, hence why I am buying them again. I love the color effect of these specific lens, it still feels bright but good for sensitive eyes. They fit my face very well and are even good for outdoor exercise!

Excellent and attractive sunglasses! The light translucent blue frames paired with the blue lenses is a very attractive option. They fit nicely, and are a great size. I'm a standard male model: 5'11", 185lbs, athletic. Face shape is normal, eyes slightly closer together than typical. I received compliments on my first day wearing them, and folks were impressed and intrigued with the price point.

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. 👍

I purchased this sunglasses on June 29th because they were on sale, in preparation for my upcoming beach trip last week 8/1 to 8/8 of 2026. While they are very comfortable and look great, I am disappointed at the fact that the lenses had began to peel? There are black spots on both lenses now after one week at the beach.

It says in the description that they are PuriVex Water & Salt Repellent.

This are not durable at all, and I am very disappointed because, as stated the glasses fit great and are very comfortable for everyday use. Either for walking, driving, or just hanging by the pool.

I would rinse the glasses with fresh water after each use however, that seems to have done nothing to prevent the lenses from being damage.

I think, for everyday use these are great. If used at the beach for a week, know that they will not last past the fifth day.

Love these glasses! They are durable, lightweight comfortable. I am an irresponsible owner and have lost two previous pairs. I had one pair for approximately one year and they were super durable. I keep coming back because they are so affordable for a good pair polarized glasses.