The Marlin is a full jacket frame specifically designed for high impact watersports. Be warned; there are plenty of poor quality copies of this sunglass style and at a higher price. 

Features:
High quality polarized lenses
UV 400 protection
Impact resistant and flexible frame and arms
Integrated rubber nose piece for faceplant protection
Integrated head band ensures your sunglasses stay locked in position during wipeouts
Rubberised finish
Full flotation
With microfiber fabric pouch and safety break-away neck leash
Polarized lenses eliminate glare while filtering out harmful ultraviolet light. They are an excellent choice for action adventure sports like kitesurfing, windsurfing, waterskiing, boating,  fishing, mountain biking, snowboarding, racing and jogging, etc.