1.【Product Dimension】Lens Height: 48mm, Temple Length: 146mm, Nose Bridge: 18mm, Frame Width: 145mm. 2.【Protection for Your Eyes】Alleviates visual fatigue and discomfort from long periods of web surfing, gaming and working under fluorescent lights with protection and glare reduction. 3.【Help You Sleep Better】Blue blockers help you sleep faster and longer, the blue ray blocker can help you produce Melatonin (sleep hormone) faster, making you sleep better naturally. Blue Light Shield can stop it and provide you with a better night's sleep. It is non lenses. 4.【Lightweight & Durable Blue light Glasses】Our blue light glasses are made of excellent materials that are ultra light and flexible.Suitable for long-term wearing. 5.【Filter Blue light Glasses】Blue light blocker help you resist 99.9% harmful blu-ray, reduce discomfort from TV, phone, digital screen and reading under fluorescent lights; Reduce glare, fatigue, headache, eye strain and dry eye, protect your vision and help sleep better.