Anti Blue Light (Blue Light Blocking) Glasses for Eye Protection   Exposure to electronic devices (e.g., computers, phones, TV, and tablets) can cause eye strain, fatigue, pain, and even severe headaches as their screens release blue light. Moreover, it has been known that blue light exposure can also lower melatonin levels associated with deep sleep. SuperGuardZ® anti blue light glasses is especially designed to filter blue light to eliminate its negative impact on your health. Features:           Reduce eye-fatigue and eye-strain: Filter harmful blue light and prevent it from impairing vision and ability to concentrate (especially for children)           Health Protection:  Promotes healthy melatonin levels for deep sleep           High-Quality Sturdy Frame: Made of light-weight TR90 material ( more stronger & durable than plastic). The pins are embedded in the legs of the frame, making it more firm           Ultra Clear: High transparency for HD clarity SuperGuardZ® Lifetime Warranty:           SuperGuardZ® fully stands behind our products with lifetime warrantys           SuperGuardZ® offers you a quick, no-hassle REPLACEMENT OR REFUND            SuperGuardZ® products are warranted against manufacturing defects