For sale: Glasses designed for athletes, which block blue light and naturally stimulate the sleep hormone (melatonin). Features: Deeper Sleep: Helps you fall asleep quickly after evening workouts. Better Recovery: Improved sleep quality means faster muscle repair. Maximum Protection: Available with (orange) lenses to block disruptive artificial light. High Quality: Comfortable and lightweight design. Frame Material: Plastic Lens Material: Plastic Lens Features: Blue Light Blocking Type: Prescription