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Free standard shipping on all orders!
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
THEYLS MEASUREMENTS
ESTIMATED FIT: MEDIUM ADULT / UNISEX
Best suited to adults with an average face width. The 144 mm arms provide a regular adult length, while the 20 mm bridge should suit many medium nose bridges.
HOW TO CHECK YOUR FIT
For the most reliable comparison, use a pair of glasses you already wear comfortably. Look inside one of the arms for three numbers. They may appear like this:
50-20-144
The frame measures 50-20-144. Measurements close to your current pair are the best starting point, although frame shape and nose position can also affect how glasses sit on your face.
If you are unsure, contact Vynix with the measurements printed inside your current glasses before ordering.
Tethys is a lightweight square frame designed for long screen sessions, gaming and everyday indoor wear. At just 16g, its barely-there feel makes it comfortable for extended use, while the clean black-and-clear design gives it a versatile modern look.
Choose from three blue-light lens options:
• 30% Clear — A subtle everyday lens for daytime screen use, office work and general wear.
• 60% Orange — Stronger blue-light filtering for evening screen time, gaming and reduced exposure to harsh artificial light.
• 99% Deep Red — Maximum blue-light blocking for nighttime use and supporting a screen-conscious wind-down routine before sleep.
Each option uses HMC-coated lenses to help reduce reflections and improve visual comfort while using phones, computers and other digital screens.
Fit & Sizing
Fit: Balanced medium fit
Lens Width: 53mm
Bridge Width: 16mm
Temple Length: 145mm
Weight: 16g
Style: Lightweight square frame
Lens Type: Non-prescription blue-light lenses
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper; however, in many cases, you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply log in to your account, view the order using the "Complete Orders" link under the My Account menu, and click the Return Item(s) button. We'll notify you via email of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world and use a variety of shipping methods and companies to ensure a fast delivery.
Shipping costs vary from country to country; this will be calculated during checkout.
All purchases will receive a trackable shipping link with estimates of arrival .
THE BLUE-LIGHT COLLECTION
From your first email to your evening wind-down. Three lens options. A different way to filter the light around you.
Supplier-stated blue-light filtering levels. Tint and light transmission vary by lens and wavelength.
LENS 01 / CLEAR
A subtle lens for daytime screen use, work and everyday wear. The lightest tint of the three.
Explore the lens options
Illustration only. Beam intensity is not a measured percentage or an exact view through the lens.
Go subtle with Clear, warmer with Orange, or choose Deep Red for the strongest filtering option in this range.
Orange and Deep Red visibly change colours. Choose Clear when a subtler tint matters; check suitability for colour-critical tasks.
Your routine matters as much as the filtering level. Consider when you wear your glasses and whether a subtle, warm or deeply tinted view suits you.
FIND YOUR EVERYDAY PAIR
Start with how you spend your screen time, then choose the tint you want to see through.
A subtle starting point for your desk, study sessions and everyday scrolling.
A warmer view for screen sessions where you prefer a more noticeable tint.
A distinctive red tint to make part of your evening wind-down routine.
30%, 60% and 99% are supplier-stated blue-light filtering levels, not lens darkness ratings or percentages of all visible light. Actual transmission depends on wavelength. Stronger filtering does not guarantee a better sleep outcome.
A CLOSER LOOK
A light-filtering demonstration is not a clinical sleep test. Results depend on the lens, wavelength and test setup shown.
Read the test report ↗GOOD TO KNOW
These are the supplier-stated blue-light filtering ratings for Clear, Orange and Deep Red. They are not percentages of all visible light. Transmission varies by wavelength and test conditions; the animation is a guide, not a spectral measurement.
Clear is the subtle everyday option. Orange adds a warmer tint with enhanced filtering. Deep Red is the strongest filtering option in this range and creates a distinctly red-tinted view. Choose for your routine and how much colour change you prefer.
No. Filtering light and improving sleep are different claims. You can make your chosen lens part of an evening routine, but these glasses are not a treatment for insomnia and individual experiences vary.
Do not use Orange or Deep Red lenses for driving, night driving or tasks where accurate colour recognition is essential. Check the specific product's intended use before wearing any lens for safety-critical activities.
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