Light and Shadow
We often believe that a simple shirt is enough to protect us from the sun.
But behind the fabric, light often finds its way through.
The sun doesn't just burn bare skin—it penetrates the fibers, slips through the weave, and even gets under clothing.
And while sunscreen wears off over hours, our clothes become the only remaining barrier.
What Fabrics Hide
All textiles filter some ultraviolet rays, but few do it truly well.
A light cotton t-shirt lets through almost a fifth of UV rays.
A linen shirt, light and breathable, provides barely more protection.
Beneath their natural elegance, these materials remain permeable to light.
We think we're protected, but our skin continues to absorb.
Conversely, some fabrics are designed to block UV rays. Their secret?
A combination of density, color, structure, and fiber treatment.
It's not just a simple cloth; it's a textile technology.
Measuring Protection: UPF
UPF—Ultraviolet Protection Factor—indicates the proportion of rays blocked by a fabric.
A garment rated UPF 5 allows 20% of rays to pass through.
A UPF 25 blocks 96%.
A UPF 50+, the highest level of certification, filters 98% of UVA and UVB.
This measurement is recognized by the European standard EN 13758-1, which requires precise tests:
exposure to light, water, heat, and successive washes.
When Protection Becomes a Gesture of Elegance
UV-protective clothing is not armor. It's an art of comfort.
Its fabrics breathe, dry quickly, and let the wind caress the skin without compromising its softness.
They are made to embrace the light without fear.
An ordinary wet t-shirt loses up to 40% of its filtering capacity.
A UPF 50+ fabric, however, maintains its integrity—whether dry, damp, or salted by the sea.
The Jayne Philosophy
At Jayne, we believe in a form of protection that is not seen, but felt.
Each garment is conceived as an elegant second skin, designed in Paris, tested to the most demanding standards, and crafted to accompany the sun, not to flee it.
Here, beauty is functional, and light is tamed.
