Is the SL720 good for driving?

The gray UV400 lenses reduce glare in bright daylight, which helps behind the wheel. They are not polarized, so reflections off water or dashboards are cut less than with a polarized lens.

Will the 48mm frame fit a large face?

Probably not comfortably. A 48mm lens with a 23mm bridge and 145mm temples is a compact fit, so compare it to a pair you already own, especially if you usually wear 52mm or wider frames.

The sunglasses come ready to wear with a case. Saint Laurent typically includes a cleaning cloth with its eyewear.

How does it compare with other Saint Laurent squares?

The SL720 is one of the more restrained square shapes, with a plain acetate full rim and gray lenses. Bolder Saint Laurent squares add thicker profiles or logo hardware, which stand out more but weigh more visually.

Are the lenses polarized?

No. They are gray lenses with UV400 protection, which blocks UV rays and eases glare but does not carry polarization.

Is acetate durable for daily wear?

Acetate holds up well with normal use but softens with heat, so avoid leaving the glasses on a dashboard or in direct sun. Store them in the case to prevent scratches.