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Usable for sleep or blue-light protection. If you want to use them for sleep, night swannies should be worn 1-2 hours prior to bedtime continuously. If you are looking to protect yourself from blue-light, night swannies can also be used during the daytime, but for a limited time.It is recommended to not wear night swannies continuously during the day. For extended blue-light protection during the daytime, the day swannies are
recommended (can be worn continuously all day).
Prescription- grade lenses and anti-reflective coatings for superior visual clarity and protection.
Silicone nose pads can be adjusted for different nose shapes and provide comfortable, slip-free wear.
Flexible and lightweight metal frame.