Ker Sun

UV T-shirt - Saint-Malo

Q: Does the UPF 50+ protection ever wash out?

The UPF 50+ protection does not wash out . Our sun protective expertise has allowed us to develop fabrics that filter UV rays mechanically. Thanks to the meticulous choice of textile fibers, their optimized density and our advanced weaving techniques, we guarantee a UPF 50+ protection , without added sunscreens, which persists throughout the life of the product , even after many washes. To preserve the quality and durability of your product, we recommend that you follow care instructions carefully specified on this product sheet (see above) or on the label.

UPF 50+

Everyday life

49,90 €

This women’s short-sleeve t-shirt is perfect for a relaxed day outdoors — a sunny walk or simply a moment of relaxation in the garden.

Note: chest circumference is the most important measurement when choosing your size.

Size	Chest (cm/in)	Waist (cm/in)
XS	82–87 cm (32.3–34.3 in)	62–66 cm (24.4–26.0 in)
S	87–91 cm (34.3–35.8 in)	68–70 cm (26.8–27.6 in)
M	91–96 cm (35.8–37.8 in)	70–76 cm (27.6–29.9 in)
L	96–102 cm (37.8–40.2 in)	76–80 cm (29.9–31.5 in)
XL	102–108 cm (40.2–42.5 in)	80–88 cm (31.5–34.6 in)
XXL	108–115 cm (42.5–45.3 in)	88–100 cm (34.6–39.4 in)

S 1 left in stock

XS Out of stock
S 1 left in stock
M 2 left in stock
L 1 left in stock
XL 1 left in stock
XXL Out of stock

Product variants

To choose the most suitable size, please refer to the size chart.

Free delivery to a pick-up point for purchases over €40. Free returns. See delivery and return options.

Complete your look

Technical Details

Very high sun protection: fabric certified UPF 50+ against UVA and UVB according to the EN 13758-1 standard.

Optimal comfort: a blend of cotton and viscose for exceptional lightness and softness.

Extensibility: fluid fabric, limits creasing.

Cooling properties: contains viscose for a cool feeling on the skin.

Features

Straight fit, ideal for everyday wear
Crew neckline to protect the décolleté
Short sleeves
Dropped shoulders for a modern look
Weight (size M): 86 g

Composition

47% cotton, 47% viscose, 6% elastane.

Traceability and manufacturing

Design & Product Development: France

Dyeing / Printing: China

Weaving / Knitting: China

Manufacturing (Sewing/Assembly): China

UV and Quality Testing: France

Logistics & Shipping / Customer Service: France

French company Ker Sun oversees every key stage of its production. In Annecy, in the heart of the French Alps, we design our collections, select each fabric, create prototypes, and carry out UV-protection tests as well as quality control. Our team also provides attentive and accessible customer service there. From our logistics hub in Burgundy, in north-eastern France, your orders are carefully prepared and shipped worldwide.

This product is made in China, in the Shanghai region, a cradle of textile expertise recognised worldwide. Dyeing, weaving, tailoring – every step is carried out locally by our trusted partners, carefully selected for their know-how and the rigour of their production standards. This choice is deliberate: it allows us to combine outstanding quality, durability, and controlled pricing, without ever compromising your health.

For your safety, our UV-protective clothing is classified as Personal Protective Equipment (PPE) by the European Union. As such, it is subject to strict regulatory checks, ensuring reliable and lasting protection, as well as consistent quality.

And because your needs are not all the same, we have also developed a range of garments made in Portugal, using local fabrics that combine European craftsmanship and excellence.

Washing and care instructions

Machine wash at 30°C maximum on reverse side

No bleaching

No machine drying

Ironing at 110°C maximum

No dry cleaning

Spectrophotomètre permettant de mesurer l'efficacité des tissus anti-UV Ker Sun et leur conformité avec la norme européenne EN 13758-1.

Maximum sun protection certified UPF 50+

Our garments offer the highest level of sun protection, certified UPF 50+ under the European standard EN 13758-1. Every fabric, in every color and with each new production run, is rigorously tested to ensure this excellence.

Designed for the most delicate skin, they provide optimal protection against the sun's rays.

Zoom tissu de tissu de t-shirt anti-UV UPF 50+

Innovative fabric technology for lasting protection

At Ker Sun, your skin is our top priority. Our expertise in UV protection has enabled us to develop fabrics that mechanically filter UV rays. Through meticulous selection of textile fibers, optimized density, and our advanced weaving techniques, we guarantee UPF 50+ protection, without added sunscreen filters, that lasts throughout the garment’s lifetime, even after countless washes.

Frequently Asked Questions

Is this product suitable for my specific condition?

Ker Sun’s UPF 50+ clothing and accessories are specifically designed to deliver optimal sun protection for highly sensitive skin, including individuals requiring extra care due to specific conditions.

We effectively protect:

People without any condition who wish to prevent sun-related harm.
Those with medical conditions who need rigorous sun protection.

Below are some examples of conditions for which our garments are suitable:

Skin cancers: Basal cell carcinoma, squamous cell carcinoma, melanoma
Autoimmune diseases: Lupus, scleroderma, dermatomyositis
Medical treatments: Chemotherapy, radiotherapy, immunosuppression, photosensitizing treatments
Dermatoses and photosensitivity: Actinic keratosis, porokeratosis, vitiligo, eczema, photosensitive dermatoses, chronic actinic heliodermatitis
Rare genetic conditions: Erythropoietic protoporphyria, Bloom syndrome, porphyrias, ichthyoses

Our products guarantee UPF 50+ certified UV protection, providing you peace of mind no matter your situation. If you have specific questions, our team is here to assist you.

Does the UPF 50+ protection ever wash out?

The UPF 50+ protection does not wash out.

Our sun protective expertise has allowed us to develop fabrics that filter UV rays mechanically. Thanks to the meticulous choice of textile fibers, their optimized density and our advanced weaving techniques, we guarantee a UPF 50+ protection, without added sunscreens, which persists throughout the life of the product, even after many washes.

To preserve the quality and durability of your product, we recommend that you follow care instructions carefully specified on this product sheet (see above) or on the label.

Which certification or standard does this product meet for sun protection?

This garment is certified UPF 50+, providing you with the highest level of sun protection. Every fabric, regardless of color, undergoes rigorous testing under the European standard EN 13758-1 for each new production run, ensuring maximum, reliable, and safe protection.

What sets a Ker Sun UPF 50+ clothing apart from regular ready-to-wear clothing?

Ker Sun's UPF 50+ clothing does more than dress you: it effectively shields you from sun-related risks. This protection is built on three pillars:

Exceptional sun protection: Our clothes are made from UPF 50+ certified fabrics. This long-lasting protection creates a permanent barrier against UV rays, going far beyond what standard ready-to-wear clothing can offer.
Optimal coverage for reinforced protection: Each Ker Sun piece is thoughtfully designed to protect the most sun-exposed areas (arms, neck, hands, face, chest, legs etc.) while maintaining elegance and everyday ease of use.
Maximum comfort, even in hot weather: Designed with heat in mind, our breathable, lightweight fabrics and airflow-friendly cuts help keep you cool while staying shielded from UV rays.

Conventional ready-to-wear clothing, which isn’t designed for sun protection, consistently lacks these benefits. At Ker Sun, our mission centers on creating garments that truly defend you from the sun, allowing everyone to enjoy outdoor activities with peace of mind.

Do I need to apply sunscreen underneath my UPF 50+ clothing?

With Ker Sun sun protective clothing and accessories, there’s no need to apply sunscreen on covered areas.

However, for full protection, it’s important to apply sunscreen to any exposed skin. We recommend applying sunscreen 30 minutes before sun exposure and reapplying every two hours or after swimming, in accordance with the instructions for the product you’re using.

For which activities is this product designed?

This UPF 50+ sun protective product is designed for all your daily activities, delivering sun protection and comfort in any situation.

Whether you’re traveling, heading into the city, strolling through the woods, cycling, or gardening, it ensures optimal defense against the sun’s rays while allowing you the freedom of movement you need. Versatile and lightweight, it’s perfect for effortlessly accompanying both your leisure time and outdoor pursuits.

Ker Sun alongside dermatologists and healthcare professionals since 2021

Over 900 dermatologists in France and Europe recommend Ker Sun. Whether through prescriptions, in-office displays, or the distribution of our awareness materials, these experts trust us to protect your skin. As the WHO emphasizes: "Wear protective clothing." With Ker Sun, you’re choosing the option recommended by healthcare professionals.

A brand committed to sun protection

Ker Sun is deeply committed to sun protection.

In partnership with dermatologists, associations, and public health stakeholders, we actively participate in prevention campaigns, financially support initiatives, and create educational materials.

Beyond our clothing, we are wholeheartedly dedicated to an optimistic mission of education and awareness to protect everyone's health, without resorting to alarmism.