Men's Long Sleeves UV Swim shirt UPF 50+ - Ultimate Coolibar

Sun protection: UPF 50+ guaranteed, highest rate

€76,40 €89,90
We offer Europe-wide shipping and free shipping options, more details below.
€76,40 €89,90

Coolibar is an American brand that runs large, use the size guide for more details.

Size guide
Brand Size (US) Chest Size (cm)
S 86 - 92
M 97 - 102
L 107 - 112
XL 117-122
XXL 127 - 132

To measure your chest size, place the tape measure at your armpits, at the strongest point, and go around.

Free delivery and returns from 69€ in the Netherlands.

You have a question? Check out our FAQs or contact us by email or live-chat.


SIZE ADVICE: Coolibar is an American brand that sizes large, we advise you to take a size smaller than your usual size in France. Use the size guide for more details.

For any questions it will be our pleasure to answer you by phone at +33 9 77 08 01 51

Sun protective swim t-shirt - Ultimate - Coolibar

Designed with a lightly tailored fit for all types of water activity, the Ultimate UV Protection T-Shirt is packed with technical features to keep you comfortable and protected. Grommets are included in the armpits to improve air circulation and water drainage. A zipped back pocket can store a card or keys. This men's lycra stays in place with a loop inside the front hem that attaches to the swimsuit and a drawstring elastic at the back hem to keep it from going up. The revolutionary water-repellent finish wicks away water and improves drying time.

  • Sun protective: UPF 50+ (except part under the arms) *
  • Crew neckline
  • Flat seams to prevent chafing
  • Back hem with elastic to keep the t-shirt in place.
  • Swim shorts fastening loop inside the front hem
  • Eyelets in the armpits for better air circulation and better water evacuation.
  • Zippered storage pocket
  • Water repellent finish to wick away water and improve drying time.
  • Aqua Plus Fabric: Water repellent with 4-way stretch and quick drying performance. Chlorine and salt water resistante

Recommended for swimming and water sports.
Avoid active fitness. Does not wick away moisture and may cause a feeling of heat

* This garment's mesh ventilation panels allow for better air circulation to promote cooling and help the wearer stay dry. Vent panel areas of this product may be subject to lower levels of UPF protection when exposed to direct sunlight, depending on use. We recommend the use of sunscreen for all areas of exposed skin and areas that may need additional protection depending on your use.

What does UPF 50+ mean?

This product is UPF 50+ certified.

UPF stands for Ultraviolet Protection Factor. It is an index measuring the ability of a fabric or material to filter out ultraviolet rays. The UPF 50+ index is the highest UV protection certification in Europe, according to European standard EN 13758-1. An UV protective garment with UPF 50+ certification blocks over 98% of UV rays, protecting your skin from possible burns and lesions.

By way of comparison, a cotton summer t-shirt often has a protection factor of around UPF 5. This means that 20% of UV rays pass through the fabric, which is a lot for someone who has to stay out of the sun or is exposed to it for long periods of time.

At KER SUN, your safety is our priority. That is why we use our own laboratory to test the UV clothing and accessories we offer on our online shop to make sure they comply with UPF 50+ certification.

Payment methods

  • Credit cards (Visa, Mastercard, Apple Pay)
  • Paypal
  • Bank Wire


The stated delivery times are calculated in working days from Monday to Friday. All products are dispatched from France.


 Standard Delivery (Home Delivery) 2 - 8 Working days Free from 69€ (or 4,90€)
Express Delivery (Home Delivery) 2 - 4 Working days 8,50€



Would you like to make a return? Find out more about the procedure here.

Returns for refund :  

  • Returns for refund are possible for 14 days from the date of receipt of the parcel. We will issue a full refund for the returned product(s)*.
  • We offer a return transport label for returns from mainland France, Belgium, Germany, Luxembourg, the Netherlands, Spain and Italy.
  • For returns from Sweden and Denmark, we offer the shipping label for 5€.
  • For other countries, the return is at the customer's expense.

*If shipping costs have been paid at the time of ordering, they will not be refunded.

Exchanges : 

  • To make an exchange, simply return the item and order the new one. Once the product has been returned to our premises, you will be refunded.

About Ker Sun

Ker Sun is above all a personal story. About ten years ago, Claudia, our co-founder, was diagnosed with Lupus, an autoimmune disease that forces her to be extremely careful with her sun protection. That day, she felt like she was losing some of her freedom. Like many, she no longer felt safe going outside.

In 2019, to make wearable sun protection accessible, we launched Ker Sun. Ker Sun's mission is to protect every person from sun damage. We want to give back to those with the most sensitive skin, the freedom to enjoy outdoor activities safely. We also actively participate in the prevention of UV-related diseases.

Today Ker Sun is the first French online store specialized in sun protective clothing and accessories. We distribute different brands and quality products to guarantee you an optimal sun protection.

At Ker Sun, your safety is our priority! All selected sun protective clothing is UPF50+ certified regardless of the color of the fabric. Take clothes that you will enjoy wearing, we take care of your skin.