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Lichtblock® Full spectrum 4000K & 2700K - natural light for work and everyday life
Letto is your choice when you need maximum shielding - for noticeably more rest
Simply stick them on
Ideal for night-time orientation without sleep disturbance
They reduce visual stimuli
Sera Sleep - Blueblocker Brille Blueblocker Kinderbrillen Lichtblock® Full spectrum 4000K &The Sera from our Sleep series was specially developed for the evening hours and blocks 100% of blue light up to 500 nm exactly the light spectrum that can activate your nervous system after sunset and disrupt melatonin production. Consistent filtering helps your body to switch to natural sleep mode for faster falling asleep, deeper sleep and more regeneration. Ideal for anyone who still works in the evening, watches series or spends time in bright
