Classic Night Swannies Blue Light Blocking Glasses size regular Swanwick Sleep

Size Regular. Gently used. The most scientifically-proven blue light blocking glasses on the market. - Block 99-100% of blue light in the evening to fall asleep easily. Wear for 1 to 2 hours before bed. - Get good quality sleep with no tossing and turning at night. Wake up feeling rested and energized. - Use your electronic devices before bed without them affecting your sleep. - Protects against eye strain. BPA-free acetate frames Flexible spring hinges Prescription grade CR-39 lens Calming orange-tinted lens blocks more blue light Comes with glasses case with snap closure.