Oakley BiSphaera sunglasses review

The Oakley BiSphaera is a new kid on the block from the brand, but how does it measure up against the best triathlon sunglasses around?

The BiSphaera is a brand-new sunglasses style from Oakley that launched in spring alongside its sibling, the Sphaera.

While the Sphaera comes with a single lens, the BiSphaera (as the name suggests) comes with a twin lens design.

Oakley bills the BiSphaera as a ‘versatile counterpart’ to the Flak 2.0 XL, reporting it’s designed to allow athletes to transition from sport to daily life with ease.

That being said, they’re still very much designed to be high performance sunglasses with multisport in mind. 

Design

As mentioned, the glasses come with a twin-lens design, but they also have a shorter profile (approx. 40mm deep) than many other performance sunglasses you’ll find on the market. 

This may suit smaller faces better and it also makes it more acceptable to wear them both casually and when training or competing. 

However, there is a trade-off, as the top frame cuts into view when on the drops of your handlebars or when in position onaerobars. 

The narrow design also means the bottom of the lenses can sometimes also come into view, while wind can also sneak in behind them. 

Lens performance

The Prizm Black lens is one of the darker ones in our 2024 sunglasses test, with a VLT of 11% and a base lens colour of grey.

This setup works great in direct light, as it’s designed for, but it turned out to be a little dark on overcast days.

The Prizm tech does a great job of boosting contrasts and pulling out details on the road, though.

Oakley also says the glasses have been impact tested in order to ensure protection from airborne debris and other incidents.

I’ve not managed to put that to the test here, but I have crashed out on an off-road triathlon course while wearing the Oakley Sutro sunglasses, protecting my face and eyes impressively well.

Comfort and fit

I’ve always got on well with the fit of Oakley sunglasses and the same can be said here. 

For me, the fit is perfect, with no movement whatsoever, whether sprinting during a run interval or accidentally hitting the odd pothole on the bike. 

Comfort is high, too, though the arms of the glasses may feel a little tight if you’re blessed with a big head (which means a big brain, right?).

Worth noting is that there aren’t any alternative nose pieces here, nor much adjustment in the tips of the arms, which you sometimes get with other brands.

The bottom line

These are undoubtedly highly accomplished sunglasses. They’re very high quality and the lens performance is impressive, but in my opinion they just don’t offer adequate coverage for triathlon, or even cycling.

See our list of the best running sunglasses if you want some performance eyewear best-suited for one sport.

Oakley BiSphaera specs

Price:	$202 / £168
Sizes:	One size fits all
Hard case?	No
Lens:	Prizm Black lenses
Spare nose bridges?	No