Retro-style square with a brown tortoiseshell frame and vibrant yellow mirrored lenses, shown against a plain white background.
Oversized square sunglasses with a translucent brown tortoiseshell frame and reflective yellow mirrored lenses, shown on a plain white background.
Square glasses with a translucent brown acetate frame and mirrored yellow lenses reflecting blue light, shown on a plain white background.
Swanwick Foldable Hard Case GIF
Retro-style square with a brown tortoiseshell frame and vibrant yellow mirrored lenses, shown against a plain white background.
Oversized square sunglasses with a translucent brown tortoiseshell frame and reflective yellow mirrored lenses, shown on a plain white background.
Square glasses with a translucent brown acetate frame and mirrored yellow lenses reflecting blue light, shown on a plain white background.
Swanwick Foldable Hard Case GIF
New arrival

Relax Swannies Harvard Tortoise

The ultimate relaxation lens. Designed to decrease stimulation and calm your nervous system so you can relax naturally.
$149.99 USD

Lens

Focus Harvard Front white Background FocusRetro-style square with a brown tortoiseshell frame and vibrant yellow mirrored lenses, shown against a plain white background. RelaxRounded square glasses with a brown tortoiseshell frame and vibrant orange mirrored lenses reflecting blue and purple light, shown against a plain white background. Sleep
Measurements
Regular
Lens Width 51 mm
Bridge 21 mm
Temple 145 mm

The majority of adults find that the regular size is the best fit for them.

Compare the measurements to your current eyewear. The lens, bridge and temple widths are usually marked on the inside arm of the glasses.

This style has nose pads which can be adjusted to fit different nose shapes and change the height the glasses sit on your face.
Select Lens and Purchase
Free US Shipping on orders over $50
30-day money back guarantee
A simple calming ritual
Signal your body to wind down naturally.
Block over stimulating blue light
Shift from productivity to presence.
Calmer evenings, better mornings
When your evenings improve, everything else follows.
Description

Looking for a natural way to unwind? Relax Swannies® support your body’s circadian rhythm in a modern world of over-stimulating screens and artificial light without adding more tech to your performance stack.

By filtering stimulating blue light while you wind down, Relax Swannies® help signal your body to shift from alert to calm supporting calmer energy, presence, deeper sleep readiness, and better next-day performance.

No apps. No supplements. No changing your routine. Just wear them when you’re ready to unwind and let your body do the rest.

The Harvard features a refined rectangular silhouette that blends classic sophistication with modern everyday style. Crafted from premium acetate, its clean lines, softly rounded edges, and balanced proportions create a timeless look that suits a wide range of face shapes. Its comfortable fit and versatile unisex design make it ideal for all-day wear, while the rich tortoise finish adds warmth, character, and understated elegance. Whether at work, studying, or enjoying everyday moments, the Harvard offers a polished yet effortless style for anyone seeking classic rectangular blue light glasses with a contemporary edge.
Features
CR-39 Lenses

Prescription-grade lenses and anti-reflective coatings for superior visual clarity and protection against blue light.

Alloy frames

Flexible and lightweight metal frame.

Adjustable nose pads

Silicone nose pads can be adjusted for different nose shapes and provide comfortable, slip-free wear.

Classic Barrel Hinges

Provide a structured, tailored fit and keep the frame aligned and stable.
Swannies® Circadian System Guarantee

We’re so sure you’ll love your Swannies that we offer a 30-day 100% money-back guarantee* on our glasses and lighting.

See our full returns policy.

* Please note: the following products are excluded:

  • Prescription eyewear, “Last Chance” offers, individual bundle items.
  • Sleep masks, earplugs, melatonin, linen spray, and oil roll-ons for reasons of hygiene.

See our prescription returns policy.
Fast Shipping

We offer free shipping on all orders of $50 or above.

Shipping costs for orders below $50 are calculated at checkout.

Expedited shipping options are available on qualifying orders. This will be presented as an option at checkout when available.

All prescription lens orders are shipped free within the US.
View details
The junk light epidemic

Can’t sleep? The problem is staring you in the face

  • History of blue light, sunset view

    History

    For 99.99% of human existence, blue light was only present during the day. The sun went down, blue light faded, and our body knew it was time to sleep.

  • Modern blue light smart home

    Fast forward

    Now, blue light is everywhere. Screens and artificial lighting expose us to junk light long after sunset, tricking the brain into thinking it’s still daytime.

  • Woman washing dishes in a kitchen with children playing in the background

    Why this matters

    This keeps the nervous system overstimulated – leaving us feeling stressed instead of calm and present.

  • all groups aviator relax swannies blue light eyeglasses worn by a man cooking.

    A modern solution

    Relax Swannies® Blue Light Blocking technology filters the most stimulating blue light, helping the body shift naturally from go-mode to relaxation.

  • Daily impact

    The result? Your natural sleep rhythm is restored, helping your body recover and wake up properly rested.

Tim Gray in Relax Swannies
Relax

Filters stimulating blue light disturbing your calm.

Developed from 3+ years of testing with experts in circadian science, the Relax Swannies® lens is engineered to reduce harsh blue light and support your circadian rhythm - helping your body shift toward calm without overblocking light needed for everyday living.

Relax

No gadgets or gizmos. Just simple science.

Don’t overcomplicate your winddown routine. Take control of your relaxation without spending thousands on tech. Track the gains or don’t - either way, you’ll feel the difference.

airport gate agent in monroe relax
Relax

Same activities. Infinitely better mood.

Wear Relax Swannies® when you're ready to destress - whether at the office, commuting, at home, or out with friends. Filter the most stimulating light and help your body shift into a calmer state. Switch to Sleep Swannies® 1–2 hours before your desired bedtime.
Relax

Filters stimulating blue light disturbing your calm.

Developed from 3+ years of testing with experts in circadian science, the Relax Swannies® lens is engineered to reduce harsh blue light and support your circadian rhythm - helping your body shift toward calm without overblocking light needed for everyday living.

No gadgets or gizmos. Just simple science.

Don’t overcomplicate your winddown routine. Take control of your relaxation without spending thousands on tech. Track the gains or don’t - either way, you’ll feel the difference.

Same activities. Infinitely better mood.

Wear Relax Swannies® when you're ready to destress - whether at the office, commuting, at home, or out with friends. Filter the most stimulating light and help your body shift into a calmer state. Switch to Sleep Swannies® 1–2 hours before your desired bedtime.
A Swannies® calm changes everything

  • A simple calming ritual

    Signal your body to wind down naturally.

  • More energy, clarity, & focus

    It all starts with a good night’s rest.

  • Calmer evenings, better mornings

    When your evenings improve, everything else follows.

  • Reduced stress

    Calms the nervous system overnight, so stress doesn’t carry into the next day.

  • Improved mood

    Supports emotional regulation, helping your mood feel more balanced.
Kensington Relax Swannies frame and lens exploded view

Swannies® Relax Technology

How the world looks through Swannies 

Drag the handle. Left of the line is through the lens.

With lensWithout
Without With lens
White page
Skin
Sky
Phone screen
Leaves
Red
Wood
Night sky

Simulated from the lens's measured color. A lens that blocks blue and green darkens cool colors and keeps warm ones.

Relax Swannies Harvard Tortoise FAQ
What problem do Relax Swannies® actually solve?

Modern environments keep your brain in a constant state of stimulation. Relax Swannies® reduce the intensity of artificial light and blue light exposure, helping your body shift out of high-alert mode so you can feel calmer, less wired, and more at ease.
Do I need these if I already use night shift or screen filters?

Screen settings only reduce a portion of blue light and vary by device. They don’t protect you from overhead lighting or your full environment. Swannies® provide consistent, full-spectrum light management across all your devices and surroundings, so you’re fully supported wherever you are.
Why Swanwick?

Swanwick is the only brand of blue light blockers that have routinely sought third party validation. We've been studied by the University of Washington and the University of Indiana. We've been featured in a study by SleepScore Labs, and had research findings published in the Journal of Applied Psychology and Harvard Business Review.

There is no other brand on the market that has gone to the lengths we have to make the validation of our technology the backbone of our company. Talk is cheap in the blue light world. Why Swanwick? Because our actions speak way louder than their words.
Why not just go straight to Sleep lenses?

Sleep lenses are designed for full blue light blocking before bed. Relax lenses are a step in between, allowing you to unwind earlier in the evening without overly distorting your environment. This makes them more practical for everyday use after work
How Swannies® redefine blue light protection

Most blue light glasses rely on basic coatings that filter only a small portion of blue light and are rarely validated for real-world performance.

Swannies® are different. Our lenses are precision-engineered to target specific wavelengths that influence focus, relaxation, and sleep. Each lens is third-party tested and designed with a clear purpose within your circadian rhythm, delivering effective blue light reduction without unnecessary color distortion or compromise.

The result is a more intentional, performance-driven approach to light management, not just a tinted lens, but a system designed to support how you function and recover throughout the day.
How much does shipping cost?

We offer free shipping on all orders of $50 or above.

Shipping costs for orders below $50 are calculated at checkout.

Expedited shipping options are available on qualifying orders. This will be presented as an option at checkout when available.

All prescription lens orders are shipped free within the US.
What is your returns policy?

We’re so sure you’ll love your Swannies that we offer a 30-day 100% money-back guarantee* on our glasses and lighting.

See our full returns policy.

* Please note: the following products are excluded:

  • Prescription eyewear, “Last Chance” offers, individual bundle items.
  • Sleep masks, earplugs, melatonin, linen spray, and oil roll-ons for reasons of hygiene.

See our prescription returns policy.
Unlocking Peak Performance
Unlocking Peak Performance
Dimming stimulation lets your nervous system reset.
— Tim Gray, @TimBiohacker
Tim Gray in Relax Swannies
Unlocking Peak Performance
Essential for keeping my circadian rhythm on track.
— Tim Gray, @TimBiohacker
Tim Gray wearing Kensington Sleep Swannies blue light glasses
Unlocking Peak Performance
Upgrade your light, upgrade your performance.
— Tim Gray, @TimBiohacker
Sapphire_Focus_Swannies_Tim_Gray
10 years dedicated to

Better Sleep and Focus

  • Daniel Bove in swannies
    Bad day to be blue light.
    @danielbove
  • Health creator wearing Focus Swannies blue light blocking glasses
    ...provide a sense of calm to the eyes and ultimately the brain
    @purist_natural_medicine
  • Lifestyle creator wearing Focus Aviator Swannies blue light blocking glasses
    Loved the night ones so much I ordered the day
    @itskatiekelly
  • Lifestyle blogger couple wearing Sleep Swannies blue light blocking glasses
    Blue blockers...realign yourself with a new time zone
    @kirstflan
  • Creator wearing Sleep Swannies blue light blocking glasses
    Building melatonin is crucial for a good nights sleep
    @lisamichelleblog
  • Man wearing sunglasses and a cap, with 'Be Kind' text on shirt
    Be kind... to your eyes
    @bigshelbailey

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The science of better sleep

Control the light. Reset your rhythm.

The light you’re exposed to during the day shapes how alert you feel at any given moment – and how well you’ll sleep later on. Swannies® work as a full, science-backed...
Read more
Swannies® Collection

Light-blocking lenses for full circadian control

Doctor focus crystal

Focus

Daytime lens
Performance & productivity

all groups aviator relax swannies blue light eyeglasses worn by a man cooking.

Relax

Evening lens
Wind down & relaxation

Person lying on a bed using a tablet with headphones and blue light blocking glasses in a dimly lit room.

Sleep

Nighttime lens
Deep rest & recovery

Better light. Better life.

Swannies® Circadian System Guarantee

Try Swannies® for 30 nights. Don’t love them?
Send them straight back for a full refund.
Buy yours now
300,000+ pairs sold