Smith Guides Choice XL This XL version has all the same features as the fan-favorite, but with an extra-large fit. The aggressive 8-base frames offer unmatched sun protection. To prevent these shades from slipping off your face, we included Megol pads and spring hinges. There's also an integrated leash, so there's no losing them to the water. Extra-large fit, extra-large coverage 8-base lens curvature offers a wraparound fit Megol nose and temple pads provide nonslip grip so glasses stay put Spring hinges self-adjust to your face for a customized fit