Infinity - Black | Black Polarized Lens
Infinity - Black | Black Polarized Lens
Infinity - Black | Black Polarized Lens

Infinity - Black | Black Polarized Lens

SKU: SUN121


Colorways:
Size chart

Size Guide

Size Hat Size Inches CM
Small (S) 6 ½ - 7 ⅛ 20.5" - 22.4" 52cm - 57cm
Most Popular
STANDARD (Std.)
6 ⅞ - 7 ½ 21.7" - 23.6" 55cm - 60cm
X-LARGE (XL) 7 ⅛ - 7 ⅞ 22.4" - 24.8" 57cm - 63cm

How to measure

To choose the right size, follow the steps below:

Use a measuring tape for maximum accuracy (flexible tape, if possible).
Make sure the measuring tape is positioned to where your hat will be wore and neither too tight nor loose.
Measure on bare skin / over hair similiar to how you would wear your hat.
Compare your head measurements to those on our size chart, and choose the size closest to yours.

  • Availability:
    In Stock
  • Backordered, shipping soon

Regular price
Price $69
/
Shipping calculated at checkout.


Infinity – Black Frame with Black Polarized Lens

Built for boldness. Designed to move.

Where performance meets edge, the Infinity sunglasses bring high-function energy with everyday style. With a flat-top shield silhouette and deep black-on-black finish, they’re made to stand out—on the track, heading to the gym, or out on the town.

  • Polarized lenses with UV 400 protection cut glare and deliver crisp clarity in any light

  • Featherlight, impact-resistant frame keeps things comfortable without slowing you down

  • Grippy, no-slip nose pads keep them secure no matter how hard you go

  • One-size-fits-most design built to suit a range of face shapes and active lifestyles

  • Matte black frame with matching black lens for a sharp, stealth-forward look

Clean lines. High performance. All confidence.
Your everyday flex just leveled up.

All orders received by 5:00pm ET are processed same-day, excluding Sundays and federal holidays. You'll receive a notification once your order has shipped, with a tracking number provided. We offer hassle-free returns and exchanges within 30 days of delivery. For any inquiries or assistance, please contact us at info@alteregorunning.com.

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Customer Reviews

Based on 17 reviews
94%
(16)
6%
(1)
0%
(0)
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H
Holly M. (Charlotte, NC)
New favorites!

These are some of the best sunglasses I've ever run in. They stay put, they're super lightweight, comfortable and full coverage while still being stylish. I wasn't sure if they would be too big for my face but I love them. These will be in heavy rotation in Summer especially.

K
Kyle C. (Upper Darby, PA)
Wear them everywhere

Heads down the favorite pair of sunglasses I own!

J
Jaimie C. (Langhorne, PA)
Glasses are great!

These fit so well. While running they do not move from my face. Love the shape and color too!

M
Michael H. (Lynchburg, VA)
A true no-bounce

I've worn Goodr, Knockaround, and more - but I like the light feel and no bounce of AER glasses.