Technical Details

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

Ultra-stretchy: stretch technology for exceptional comfort.

High resistance to chlorine and salt water.

Sustainability: recycled polyester.

These anti-UV swimming costume bottoms for women are essential for all your swims. UPF 50+ certified (maximum certification in Europe), it will effectively protect your skin from the sun's rays, both in and out of the water.

Its classic, elegant and timeless size will enhance your figure in all circumstances.

Product benefits
  • The UV-resistant swimsuit stocking for all your bathing moments
  • Classic, elegant and timeless size
  • Wear with the matching swimsuit top or swim jacket for a trendy look at the beach and everywhere else!
Features
  • UV Protection: UPF 50+ sun protection factor (maximum certification). Blocks over 98% of UV rays.
  • Classic low waist
  • Lined front for a completely opaque finish
  • Chlorine- and saltwater-resistant fabric.
  • Stretch fabric for maximum comfort.
  • Quick drying.
Composition

  • 85% recycled polyester, 15% elastane.
Washing and care instructions

  • Rinse with clean water after use. Machine wash inside out at 30°C maximum. Wash separately. Do not tumble dry.
  • Do not iron.

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 pour maillots de bain 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.

Non-high-cut design for enhanced coverage

With its non-high-cut shape, these swim bottoms offer nearly full rear coverage for increased protection.

Frequently Asked Questions

For which activities is this product designed?

This UPF 50+ sun protective product delivers maximum sun protection for your water-based activities. Engineered to withstand water exposure while maintaining its UV-blocking properties, it’s the ideal companion for swimming, canoeing, windsurfing, snorkeling, coastal walking, and various other water sports. Combine safety and enjoyment in the sun with this product designed for your aquatic adventures.

Is this product suitable for use at the pool or in the ocean?

Yes. The material of this product has been carefully selected to be resistant to both chlorine and salt water. This means you can enjoy your garment in the pool or at the seaside, without compromising its quality or level of protection.

Can it also be worn outside of the water?

Absolutely. This sun protective garment is not limited to use in the water: it is also suitable for your moments of relaxation at the beach, by the pool or on a boat. However, if you are planning a more intense sporting activity outside of the water, we offer other models specifically designed to meet your needs in terms of sports performance and comfort.

Does the fabric maintain its UPF 50+ protection when wet?

Absolutely. The UPF 50+ certification of this fabric holds even in wet conditions, ensuring your skin remains protected from UV rays, whether the clothing is dry or after extended time in the water.

Does this product dry quickly after swimming?

Yes. The fabric in this product is designed to help water drain quickly, leading to faster drying for improved comfort and a pleasant feel.

How should I care for it to maintain its quality?

Although it is resistant to chlorine and salt water, in order to prolong the durability of this product, we recommend rinsing it with clean water at the end of a day where it has been in contact with salt or chlorinated water.

If you wish to machine wash this product, we recommend that you follow the care instructions specified on this product sheet or on the label of your garment or accessory.

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 19 reviews
84%
(16)
5%
(1)
5%
(1)
0%
(0)
5%
(1)
K
Karin P.
Klasse Sonnenschutz wäsche

Sonnenschutz, Tragequalität und aussehen sind perfekt, bin rundum zufrieden 👍❣️

O
Odile A.
Coupe parfaite, article conforme à la description

J'adore

M
Myriam A.
Bas de maillot de bain anti UV

Très bien, la taille est parfaite grâce au guide des tailles.

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 sun 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.