Make the best days better.

The Costa Mag Bay Polarized Sunglasses will give you the optics needed to spot tailing bonefish in the flats and cut glare as you kick back with a cocktail and watch the sun set. The Mag Bay houses Costa's 400 Glass lenses, which block 100% of UV rays and eliminate distracting glare via their legendary polarization. The 400 Glass lens is highly scratch resistant and helps to eliminate haze and blurring by blocking blue light waves, which are, we hear, responsible for such distortion. Costa designed these sunglasses for sport fishing, so they have an extra large fit for plenty of coverage and protection against missed sets and sloppy casts, then it added soft, low-profile nose and temple pads to ensure comfort during those days when you start before the sun's out and don't dock the boat until it's just about to set.

Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.

  • Polarized lenses
  • UV-blocking lens technology
  • Costa 400 Glass scratch-resistant lenses
  • TR-90 nylon frame
  • Nose and temple pads
  • Optical spring hinges
  • Extra large fit
  • Includes hard case
  • Reviews
  • Q & A