Sleep & Wellness

Buying a 3D-shaped sleep mask is the difference between "something on your eyes" and true darkness: the ergonomic contours of the Strex mask sit away from your eyelids and seal all around for total blackout without pressure. In this wellness collection, it sits alongside the ultrasonic cleaner — the device that uses water-based vibrations to clean jewelry, glasses, and watch straps.

Why a 3D sleep mask sleeps differently than a flat mask

The classic flat mask presses against your eyelids — you feel it with every eye movement and it shifts when you turn. The 3D shape solves both: recessed eye cups allow your eyes to move freely (important for REM sleep, during which eyes are active), the nose bridge blocks light leaking from below, and the adjustable strap keeps the mask in place without pinching. The result is 100% blackout that you stop feeling after five minutes — for side sleepers, light-sensitive sleepers, shift workers, and anyone sleeping next to a partner with a reading light. While traveling, it does the same job on planes and in hotels with thin curtains.

What should you look for?

• ✔ 3D shape — no pressure on the eyelids; eyes move freely during sleep
• ✔ Total blackout — light leakage along the nose is also sealed
• ✔ Adjustable strap — stays in place when turning, doesn't pinch
• ✔ Ultrasonic cleaner: 600 ml — large enough for glasses, jewelry, and watch straps at the same time
• ✔ Warranty — 2 years standard with Strex

Ultrasonic cleaning: vibrations do the scrubbing

The ultrasonic cleaner sends high-frequency vibrations through water, causing microscopic bubbles to loosen dirt in places a cloth cannot reach: between the links of a watch strap, behind the stones of a ring, or in the hinges of glasses. Add water, add the jewelry, wait a few minutes — and the dirt that "wouldn't come off" is at the bottom of the basin. The surprise lies in what you didn't see: a wedding ring worn for years comes out visibly brighter. It is the perfect duo with the mask: waking up well-rested and heading out looking groomed. Alongside sleep comes comfort — pregnant side sleepers can find support with our pregnancy pillows, and our full assortment can be found under home & kitchen.

Frequently Asked Questions

Can I sleep on my side with a 3D sleep mask?

Yes — that is exactly what the 3D shape was made for: the edges are soft and the mask has no hard parts that press into the pillow. The adjustable strap keeps the mask in place, even when turning at night.

What can go into an ultrasonic cleaner?

Metal jewelry, glasses, watch straps, and small metal objects — using regular tap water. Be cautious with soft gemstones, pearls, and glued jewelry: if in doubt, consult your jeweler before cleaning valuable items.

How do I wash the sleep mask?

By hand in lukewarm water with a little mild detergent, and leave to air dry — this ensures the 3D shape maintains its structure. Do not tumble dry: heat will deform the contours.

Discover Strex's sleep & wellness products — and make rest a routine.

Want to know more? Read our article "Sleep mask: does it really help and which model should you choose?".