Sumo Ring
Walnut & Ceramic
- Delivery: 2 - 5 workdays
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Free express shipping worldwide
Our customers enjoy free express delivery without any import duties or taxes! Learn more >
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24 months warranty
If you find a defect in your model, please contact our customer support and we’ll find the best solution for you. Learn more >
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24-day refund policy
You are free to return your model within the 24-day period. Learn more >
DESCRIPTION
Natural elegance from powerful materials. Sumo impresses with the dynamic look of walnut wood and the unique feel of real ceramic.
Our Sumo rings are simple but strong - the perfect companion for men who know that true strength comes from within!
Technical details
Ring width: 8mm
Size: available in different sizes
Material: Black ceramic and real walnut wood
Waterproof
What makes Holzkern special
Core Features

Ceramic
A timeless beauty. Ceramic is an exclusive material that has been used to craft high-quality timepieces since the 1980s. It is extremely robust, scratch-resistant, and provides a comfortable wearing experience. UV-resistant and waterproof, ceramic products retain their beautiful appearance for years. However, above all, we value the material for its infinite diversity of colours, which means that we can unleash our creativity and spoil our customers with new striking designs.

Walnut wood
Elegant & durable. The distinctive grain and the diverse range of colours from chocolate brown to almost black brown make this type of wood one of our favourites for the production of watches, jewellery, sunglasses and handbags. Walnut wood also impresses with its high density and the associated stability, which promises your piece of nature a long life!
Hydro-Defense Technology
Our HydroDef technology takes the resilience of natural materials to the next level. By means of a special resin coating, exposed elements of natural materials are significantly better protected from weather conditions (especially water).
Hydro-Def makes your piece of nature a faithful companion for all-purpose wear!
PACKAGE CONTENTS
THIS IS WHAT HOLZKERN STANDS FOR

Uniquely natural
Nature through and through, that's what our watches & jewellery stand for. The unique structures of wood and stone make your Holzkern product truly one of a kind.

The Holzkern family
With your purchase at Holzkern, you are supporting a young start-up that was founded as a family business in Upper Austria in 2015.

Sustainably packaged
Our watches, bandlets and jewellery are packed in high-quality wooden boxes. In addition, we also rely on recycled paper for delivering to protect your order and do not use plastic tape thanks to our self-adhesive boxes.

Order today, and it's on its way
As soon as you order, your unique piece is already on its way to you. That's too fast for you? No problem, after receiving your goods you have 24 days to change your mind, if you don't like them 100%.
"With Holzkern, I always want to express my love of nature and have set myself the goal of creating the perfect piece of nature for everyone."

Elias Ferihumer
Founder of Holzkern
Hello Nature-Lover!
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