• The BLB Nocturnal 550 Ren Lens effectively blocks 100% of blue and green light in the 400nm – 550nm range. • Stylish, premium frames with durable spring hinges for added comfort. • Designed with impact and scratch-resistant lenses for long-lasting use. • Specifically engineered to enhance sleep quality by reducing exposure to blue and green light that can disrupt melatonin levels. • Ideal for use after sunset when exposed to artificial lighting, helping promote better sleep.
