Callisto SleepSync™ Color:black This makes it extremely versatile

This makes it extremely versatile and very suited to road running

Current mood: Sitting outside a Parisian café casually oozing mystery

white the nylon lenses are fog-proof and offer HD clarity

NyTrex® HD lenses offer clarity and enhanced depth perception

Metal frames with super strong light blocking lenses

Callisto SleepSync™ Color:black This makes it extremely versatileMetal frames with super strong light blocking lenses. These red lenses block both wavelengths of light that impact sleep, blue and green. Recommended to be worn two hours before bedtime if using screens, you'll noticeable fall asleep easier. These glasses promote a deeper and more restorative sleep, aiding recovery and increasing morning alertness.