Reebok Nitrous Shift Smart Eyewear Powered by Lucyd - Photochromic Adaptive Lens - HiFi Bluetooth Sport Glasses MUSTHAVE model height is 5'10" and

model height is 5'10" and she is wearing size small

- Breathable

and a comfortable fit

energy-absorbing foams provide added Side Impact Protection

Your personal wellness coach just got wearable

Reebok Nitrous Shift Smart Eyewear Powered by Lucyd - Photochromic Adaptive Lens - HiFi Bluetooth Sport Glasses MUSTHAVE model height is 5'10" andAdaptive Photochromic Lenses: Light reactive technology responds automatically to UV exposuretransitioning from clear for night rides and indoor courts to dark for bright outdoor conditions Vision Care Compatible: Standard Base 6 frame design works with your local optical provider for personalized lens optionsbring to your eyecare professional for custom solutions Superior HiFi Sound Engineering: USA designed audio system delivers exceptional sound