A tortoise shell square frame designed to block blue light at night and support sleep, recovery, and mental clarity.
Buy now, pay later from £38.75/mo with
Key Benefits
Blocks 95–100% of artificial blue light.
Supports restful, high-quality sleep.
Reduces eyestrain, fatigue, and headaches.
Promotes calm, clarity, and focus.
Wind down with Nate Sunset – a sophisticated frame named in honour of Nathaniel Kleitman, the father of modern sleep research. With its square tortoise shell design, soft curves, and clear saddle bridge, this style offers a refined wrap-around feel for comfort and confidence as the day winds down.
Each pair features Ra Optics lenses, scientifically proven to block 95–100% of artificial blue light, essential during evening hours when screens and indoor lighting can disrupt your sleep cycle. Nate Sunset helps ease visual fatigue and overstimulation, supporting better brain function, improved energy, and deeper, more restorative sleep.
Ra Optics was founded by Matt Maruca after his own health journey led him to uncover the effects of artificial light on circadian biology. His mission became clear: to create the world’s highest-quality blue-light-blocking eyewear, backed by peer-reviewed science and guided by ancestral principles. Crafted with proprietary lens technology, Ra Optics glasses are engineered to protect mitochondrial function, regulate melatonin production, and reduce the impact of screen-induced fatigue. It’s a deceptively simple tool, designed to restore one of the body’s most critical rhythms—light and darkness.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Shipping
At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.
UK standard delivery
Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.
Next working day
For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.
International
International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.
Returns
If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.
For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.
Wear Sunset Lenses from sunset to sleep to block sleep-disrupting blue light, re-align your body’s rhythm with nature, and get the best sleep of your life.
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
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Translate your body’s data into a
personalised wellbeing plan.
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
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Expert Validation
Community Testing