1...2...3... FREE SHIPPING AS FROM 3 PIECES. SHOP NOW!

HAPPY CUSTOMER WEEKEND! FREE SHIPPING on all our orders. SHOP NOW!

EN NL

MENU

FREE SHIPPING AS FROM 3 PIECES. SHOP NOW!

DID YOU KNOW
A SUMORING FREEZES AT 18°C?

This is because of the PCM technology inside the ring.
It’s a natural cooling agent, easy to use, and can be used repeatedly.

PCM (Phase Changing Material) was invented by NASA.

Sumoring Neck Cooler Iced blue

This is why...

A Sumoring
will cool down
more quickly!

Simply because the PCM freezes faster and stays frozen longer than water!
That’s cool, right?

HOW IT WORKS?

Simply put the Sumoring inside your freezer, fridge, in ice-cold water, or near your air conditioning, and it will start to crystallize. When it’s hard, you can put it around your neck.
At the beginning, after activating a Sumoring, it will feel very cold, but not icy cold—don’t worry. After a couple of minutes, the ring will absorb your body heat and release cold for up to 90 minutes, giving you a comfortable cooling sensation.
Sumoring neck cooler grandmother snow white
Even when it’s melting inside the ring, it will still calm down your body heat.

Once the cooling effect is over, you can reactivate the Sumoring again by placing it in your fridge, freezer, in cold water, or near your air-conditioner.

You can do this as many times as you want.

The Sumoring is reusable!

Sumoring neck cooler cycling snow white
Sumoring works by cooling down specific areas of the body that are more sensitive to temperature changes.

The neck is one of these key areas, and cooling it will significantly help regulate body temperature and prevent overheating.

This ensures you stay comfortable even on the hottest moments.
So, put on your Sumoring
and BEAT THE HEAT!

STILL OTHER QUESTIONS?

WE'RE HERE...

Check out our FAQs

HOW IT WORKS?

WHEN TO USE?

FAQS

PRODUCTS

ICED BLUE

FROZEN PEACH

SNOW WHITE

Copyright © 2025 SUMORING BV. All rights reserved. WEBSITE MADE BY CODALIST

Sumoring Logo - white - transparent background

EN NL

Close

SHOP
HOW IT WORKS
WHEN TO USE
FAQS
CORPORATE

10% OFF ON YOUR FIRST ORDER

SIGN UP FOR OUR NEWSLETTER
AND GET A 10% DISCOUNT CODE

Hi there!

We are using cookies to ensure you get the best user experience on our website.
Learn more

ACCEPT