Technical Details

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

Optimal comfort: ultra-light and extensible.

Quick drying.

Opacity: anti-transparency technology.

Our UV sports T-shirt for men will effectively protect your skin from UV rays during all your physical outdoor activities. This is THE multi-sport UV protection T-shirt to have in your wardrobe, for all your activities such as hiking or brisk walking, running, tennis or cycling.

The Iced Melon sports T-shirt adds a touch of freshness to your outfit.

Its technical UV protective fabric is ultra-lightweight, so it wicks away perspiration quickly and gives you total freedom of movement.

Finally, the long sleeves are fitted with grommets to protect your wrists and the tops of your hands if you wish. Unlike conventional sports T-shirts, the sleeves of our UV-blocking sports T-shirt are designed to protect your entire forearm without letting UV rays pass through the grommets, even when you're not using them.

Looking for comfort and performance? With our UV sports t-shirt, you'll always be ready to take on your sporting challenges!
Product benefits
  • Protect your skin from the sun during all your physical activities with our UV protective sports shirt
  • Ultra-light and breathable, for good moisture transfer
  • Practical with its half-zip and discreet thumbholes
Features
  • UV Protection: UPF 50+ sun protection factor (maximum certification). Blocks over 98% of UV rays.
  • Thumbhole to protect your hands from UV rays if required. The sleeve is designed to be discreet when not in use.
  • Slim fit
  • Long sleeves
  • With a half-zip for easy donning and greater comfort
  • Fabric not designed to withstand chlorine and salt water.
  • Good moisture wicking from perspiration.
  • Stretch fabric for maximum comfort.
  • Quick dry.
Composition

  • 93% recycled polyester, 7% elastane.
Washing and care instructions

  • Machine wash inside out (30°C maximum). Do not bleach. Do not tumble dry.
  • Do not iron.
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.

Tissu de sport 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.

Integrated thumbholes for improved hand coverage

Discreet thumbholes give you extra coverage for your hands and wrists, providing heightened protection during sporting activities.

Half-zip with adjustable high collar for optimal coverage

This sports T-shirt has a handy half-zip that allows you to raise the collar for maximum sun protection.

Frequently Asked Questions

For which activities is this product designed?

This UPF 50+ sun protective product is ideal for all your sporting activities, ensuring optimal sun protection and comfort.

Designed to move with you and provide excellent breathability, it meets the needs of even the most active individuals. Perfect for hiking, trekking, running, yoga, cycling, tennis, or any other outdoor sport, it combines performance and sun safety, making it the multifunctional solution for your active days.

Is the fabric breathable and able to wick away perspiration?

Yes, this product is made from a technical fabric that promotes airflow and wicks away moisture. This breathability helps you stay dry and comfortable, even during extended physical activity.

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.

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.

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:

  1. 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.
  2. 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.
  3. 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.

Customer Reviews

Based on 20 reviews
75%
(15)
15%
(3)
10%
(2)
0%
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0%
(0)
D
Dany G.
Excellent produit

J’avais déjà acheté ce T-shirt en bleu, demain mon Orange m’a conquis. Super !

Bonjour Monsieur,

Un grand merci pour votre retour positif et votre fidélité à notre t-shirt zippé anti-UV Boston ! Nous sommes ravis d’apprendre que le coloris orange vous a autant séduit que le bleu.

Ce modèle combine haute protection solaire (certification UPF50+), confort et style pour vous accompagner en toute sérénité sous le soleil.

Merci encore pour votre confiance et à très bientôt chez Ker Sun !

Bien cordialement,
L’équipe Ker Sun

S
Salim M.
Boston

Très bon produit.
Agréable à porter pour activité sportive (vélo) par temps chaud.
Je suis satisfait de cet achat.

Bonjour Monsieur,

Un grand merci pour votre retour positif sur notre t-shirt zippé anti-UV Boston. Nous sommes ravis qu’il vous convienne pour vos activités sportives, notamment à vélo sous la chaleur.

Ce modèle a été pensé pour offrir une très haute protection solaire (UPF50+) tout en garantissant confort, respirabilité et liberté de mouvement. Votre satisfaction nous encourage à poursuivre dans cette voie !

Au plaisir de vous équiper à nouveau pour vos prochaines sorties.

Bien cordialement,
L’équipe Ker Sun

d
david l.
Blouse légère

Le tissus est très agréable, la couleur orange est lumiseuse Les manches restent bien en place grâce au passe-pouce et le col montant protège efficacement le cou.

Bonjour Monsieur,

Un grand merci pour votre retour détaillé !

Nous sommes ravis que le t-shirt zippé Boston vous plaise : entre le tissu léger, la couleur lumineuse et les finitions pensées pour la protection (passe-pouce, col montant…), tout a été conçu pour offrir confort et efficacité sous le soleil.

Votre message est très encourageant pour notre équipe, et nous vous remercions chaleureusement pour votre confiance.

Nous restons à votre disposition pour toute question, et vous souhaitons une très belle journée,

Bien cordialement,
L’équipe Ker Sun

Reviews in Other Languages

K
Klaus L.
Bin sehr zufrieden damit

Alles zu meiner vollen Zufriedenheit

Guten Tag,

herzlichen Dank für Ihre positive Rückmeldung!
Es freut uns sehr, dass Sie mit allem voll und ganz zufrieden sind.

Wir wünschen Ihnen weiterhin viel Freude mit unseren Produkten und einen sonnigen Sommer!

Mit freundlichen Grüßen
Ihr Ker Sun Team

F
Frank L.
Super UV Schutzhemd

Vielleicht etwas groß, aber es ist beim Tragen optimal, super angenehmer Stoff, sehr atmungsaktiv und kühlend, auch beim Fahrradfahren top.

P
Paul
UV-Schutz der gut aussieht

Ich bin jeden Tag 7 Stunden auf dem Tennisplatz und brauche deshalb Kleidung, die vor UV-Strahlung schützt. Gleichzeitig soll die Kleidung gut aussehen und alle Bewegungen im Sport mitmachen. Das UV-Shirt Boston erfüllt alle meine Anforderungen. Ich habe das Shirt in weiß und in blau. Beide sehen richtig gut aus und schützen den ganzen Tag.

Guten Tag,

herzlichen Dank für Ihre tolle Bewertung und das Vertrauen in unser UV-Shirt Boston! Es freut uns sehr, dass es Sie beim Tennis so gut begleitet, sowohl durch den Schutz als auch durch den Stil. Viel Freude weiterhin auf dem Platz!

Beste Grüße

Ker Sun alongside dermatologists and healthcare professionals since 2021

Over 600 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.