Size: 3.0 3.5 4.0 Engineered for extended screen use, these blue light glasses combine precise optics with ergonomic construction. A nano coating blue light filter selectively limits energy blue light in the 400 to 455 nm range while preserving natural color balance for accurate onscreen viewing. Impact resistant TR90 frames and FlexGrip temples provide a durable, adaptable fit for a range of face shapes. Key benefits Targeted blue light filtering that focuses on the 400 to 455 nm range while maintaining true color perception. Nano coating preserves color balance so images, text, and media appear natural. Flexible, impact resistant TR90 frames with FlexGrip temples for a secure, comfortable fit during long wear. Available sizes 3.0, 3.5, and 4.0 to match different visual needs. Features Nano coating blue light filter for selective wavelength attenuation. TR90 frame material for light weight and toughness. FlexGrip temple design for stability and comfort. Lens sizes offered in 3.0, 3.5, and 4.0. Practical applications Office work: Use during long periods of document review, spreadsheets, and video conferences to preserve color accuracy and reduce screen glare. Study and remote learning: Comfortable for reading, note taking, and virtual classes during extended sessions. Gaming and media: Keeps colors natural during gameplay and streaming while offering a stable fit for active use. What to expect These glasses are designed to limit exposure to energy blue light common in digital screens and to deliver a consistent, comfortable fit for everyday screen activities. Available in three sizes to match common visual preferences and usage patterns.