Can’t decide between a half or full frame? Get both.
“While endurance training, I left off the bottom portion of the frame to increase airflow and keep them light,” says one tester. “I’d switch back to full-frame later for more coverage while hiking above treeline with max sun exposure.” Swapping lenses is a cinch, too; just pull the bottom half of the frame free to remove it, and slide lens into place. (It comes with two lenses: smoke for bright light and orange for low light.)
The flexible Grillamid TR90 plastic is a bonus for big-headed testers. “I could wear them all day without headache-inducing pressure points,” says a tester. Adjustable (pliable) nose pads and arms further enhance fit, and a removable elastic retainer strap (included) ensures they’ll stay put.
“The dark smoke lens and full coverage kept my eyes fresh in the brightest conditions, like when I was touring above treeline on cloudless days with snow-covered terrain as far as I could see,” says one tester.
$120-$200 (depending on lenses); 1.1 oz.; blizeyewear.com