01
Photochromic
Auto-adjusts clear to dark with the light — no lens swaps mid-ride.
◄ PHOTOCHROMIC · LOWER BIFOCAL · CYCLING & RUNNING
Kona TT
Built for cyclists and triathletes over 40 who need to read a bike computer, GPS, or heart-rate monitor without stopping to swap glasses. Photochromic lenses shift clear-to-dark as the light changes — shade climb, sunny descent, always right.
PHOTOCHROMIC · UV400 · DECENTERED POLYCARBONATE · SPORT FIT
KONA TT · BLACK · PHOTOCHROMIC BIFOCAL
Photochromic cycling sunglasses
Bifocal running & cycling sunglasses
Auto clear-to-dark lens
Lower bifocal reading zone
+1.50 / +2.00 / +2.50 magnification
UV400 protection
Decentered polycarbonate
Triathlon eyewear
Sport wrap fit
10 frame colors
// WHY KONA TT
Read your data. Never stop.
The reading zone sits low in the lens, so distance vision stays clear while you ride — glance down to check pace, power, and heart rate, then look up and go. And the photochromic tint handles the light so you never swap lenses mid-ride.
02
Lower Bifocal
Reading power set low in the lens, +1.50 / +2.00 / +2.50 — distance stays clear.
03
Sport Locked-In
Adjustable rubber ear locks and grippy nose pads that hold when wet.
04
Race-Built
Optically decentered polycarbonate, UV400, scratch-resistant, pouch included.
10
Frame colors
Auto
Photochromic tint
3
Reading strengths
UV400
Sun protection
// KONA TT MANUAL
Questions, answered.
What riders ask before they buy.
What is a photochromic lens?+
Photochromic lenses automatically darken in UV light (sunlight) and lighten in shade or low light — no need to swap lenses as conditions change through a ride.
Where is the bifocal reading zone?+
At the bottom of the lens, so your distance vision stays clear while pedaling. Glance down slightly to read your computer, GPS, or watch.
Are these good for triathlons?+
Yes — the Kona TT is a popular choice for triathletes who need to read pace, power, and heart-rate data on both the bike and run legs.
What magnification strengths are available?+
+1.50, +2.00, and +2.50, in multiple frame colors. Match your reading-glasses strength.
What if I don't need reading magnification?+
Grab the Non-Bifocal Photochromic Kona TT ($29.95) for the same auto-tint without a reading zone, or the Frame Only ($19.95) to run your own lenses.