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“When you have that strap around your head you know it’s not going to fall off your face, no matter what,” says Leslie Muller, head of innovation at VSP. That assurance, she says, allows athletes to relax, freeing up energy that might otherwise be wasted worrying about their accessory’s micro-movements.Fake Replica Oakleys Sunglasses.You’re thinking: A strap that loops around the back of the wearer’s head? Congratulations, Nike, you reinvented Croakies! (Or, you know, goggles.) But if these features sound like overkill, it’s because they are.Or rather, they are for most people.Oakleys Sunglasses Cheap.But these sunglasses were not designed for most people—a fact made gobstoppingly clear by the $1,200 price. Nike created these for the world’s best athletes, people for whom a pair of sunglasses poses not insignificant tradeoffs. Going without shades causes athletes to squint, causing them to tense their shoulders and expend energy.Oakleys Sunglasses Authentic.But wearing sunglasses requires accounting for comfort, weight, and drag. Not a huge deal for most people, but when you’re clocking 5 minute miles or better for 26 miles, it makes a difference.

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Most of the effort focused on reducing drag. The designers tested the shades in a wind tunnel at Sacramento State University and found problems around the strap and temple.Fake Cheap Oakleys Sunglasses.Early iterations of the strap used too much material. “It was actually creating turbulence in the back of the head,” Moore says. A streamlined, more rigid strap better cradled the back of the head. Early tests also showed air flowing underneath the frame and get trapped at the temples. Making the lens hew closer to the head solved that.A ventilated brow-bar minimizes fogging.Cheap Oakleys Sunglasses Sale.A peak shaped like the hull of a boat helps air flow smoothly over the frame, reducing drag and channeling air around the runner’s head. “It’s about how do you break that front edge,” says Moore.Ultimately, Nike hopes the Wing is so light and comfortable that athletes forget they’re wearing them.Oakleys Sunglasses Cheap.“We wanted zero distraction,” Moore says. “We wanted them to be impossibly light.”And impossibly expensive. Ultimate comfort does cost.

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