---
product_id: 135360467
title: "Core Carbon RingsCORE CARBON RINGS - Handmade Ring Band - Men's or Women's Carbon Fiber Twill Ring with Blue Glow Interior, Matte Finish, Glow-in-the-Dark, Durable, Waterproof, Sizes 4-16, Custom Band Widths"
brand: "core carbon rings"
price: "¥20449"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/135360467-core-carbon-ringscore-carbon-rings-handmade-ring-band-mens-womens
store_origin: JP
region: Japan
---

# Glow-in-the-Dark Waterproof Design Durable Carbon Fiber Core Carbon RingsCORE CARBON RINGS - Handmade Ring Band - Men's or Women's Carbon Fiber Twill Ring with Blue Glow Interior, Matte Finish, Glow-in-the-Dark, Durable, Waterproof, Sizes 4-16, Custom Band Widths

**Brand:** core carbon rings
**Price:** ¥20449
**Availability:** ✅ In Stock

## Summary

> ✨ Illuminate Your Style with Core Carbon Rings!

## Quick Answers

- **What is this?** Core Carbon RingsCORE CARBON RINGS - Handmade Ring Band - Men's or Women's Carbon Fiber Twill Ring with Blue Glow Interior, Matte Finish, Glow-in-the-Dark, Durable, Waterproof, Sizes 4-16, Custom Band Widths by core carbon rings
- **How much does it cost?** ¥20449 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/135360467-core-carbon-ringscore-carbon-rings-handmade-ring-band-mens-womens)

## Best For

- core carbon rings enthusiasts

## Why This Product

- Trusted core carbon rings brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **🚀 NASA-Grade Innovation:** Crafted with proprietary technology developed for NASA, ensuring unmatched strength and comfort.
- • **🌙 Glow Anytime, Anywhere:** Rechargeable glow feature lasts for hours, making you the center of attention in any dimly lit setting.
- • **🌟 Custom Fit for Everyone:** Available in sizes 4-16 with customizable band widths for the perfect fit.
- • **🤝 Satisfaction Guaranteed:** Enjoy free exchanges and a satisfaction guarantee—your perfect ring is just a request away!
- • **🏖️ Waterproof & Worry-Free:** Durable and waterproof, perfect for any adventure without compromising style.

## Overview

Core Carbon Rings are handcrafted, glow-in-the-dark carbon fiber rings designed for both men and women. Utilizing proprietary NASA technology, these rings are lightweight, durable, and waterproof, available in a wide range of sizes and customizable widths. Each ring features a unique glow effect, rechargeable for years, and comes with a satisfaction guarantee for a perfect fit.

## Description

This ring has a modern flat black carbon band with a blue glow on the inside of the ring. The ring is offered in a matte finish. The matte finish is extremely durable and scratch resistant. The ring is made with aerospace grade carbon fiber and composite for the glow. The ring is durable, waterproof, chemically resistant, hypoallergenic and perfect for everyday use. All of our rings are handcrafted in the USA with a Lifetime Warranty.

## Features

- Sizing - All of our rings are made according to US Sizing and are a standard fit ring. Please keep in mind, the band width can affect how the ring will fit. The wider band widths will sit on the fattier part of the finger making it feel tighter. We recommend with a 9mm or 10mm band width you go up half size from what you normally wear. We also offer free exchanges until you have the perfect fit!
- Proprietary Nasa Technology in Each Ring - Having decades of experience with carbon fiber and composites, we invented a unique process for NASA that we use in every Core Carbon Ring made. The process allows for an extremely strong, lightweight, comfortable, and truly unique ring.
- Handcrafted on the Space Coast of Florida - Each ring is professionally and individually handcrafted giving you a one of a kind piece.
- Glow - We use a Non-toxic strontium aluminate infused in our resin for the glow. Glow times vary depending on charge time and sunlight exposure/UV exposure. When charged with the included UV light for 5 to 10 seconds, the ring will glow strong for a couple of minutes then the glow will dim for one to four hours. It is necessary to be in a dark or dimly lit space to see the full affect of the glow. The ring can be recharged for 10+ years. Included is a UV mini light to charge your new glow ring!
- Satisfaction Guarantee - We want you to be completely satisfied with your new ring. If you are not for any reason, please contact us. We will be happy to exchange the ring until it is a perfect fit or it can be returned for a refund.

## Images

![Core Carbon RingsCORE CARBON RINGS - Handmade Ring Band - Men's or Women's Carbon Fiber Twill Ring with Blue Glow Interior, Matte Finish, Glow-in-the-Dark, Durable, Waterproof, Sizes 4-16, Custom Band Widths - Image 1](https://m.media-amazon.com/images/I/61sDMlh9O4S.jpg)
![Core Carbon RingsCORE CARBON RINGS - Handmade Ring Band - Men's or Women's Carbon Fiber Twill Ring with Blue Glow Interior, Matte Finish, Glow-in-the-Dark, Durable, Waterproof, Sizes 4-16, Custom Band Widths - Image 2](https://m.media-amazon.com/images/I/71qY8YtjmzL.jpg)
![Core Carbon RingsCORE CARBON RINGS - Handmade Ring Band - Men's or Women's Carbon Fiber Twill Ring with Blue Glow Interior, Matte Finish, Glow-in-the-Dark, Durable, Waterproof, Sizes 4-16, Custom Band Widths - Image 3](https://m.media-amazon.com/images/I/71kyAgFil7L.jpg)
![Core Carbon RingsCORE CARBON RINGS - Handmade Ring Band - Men's or Women's Carbon Fiber Twill Ring with Blue Glow Interior, Matte Finish, Glow-in-the-Dark, Durable, Waterproof, Sizes 4-16, Custom Band Widths - Image 4](https://m.media-amazon.com/images/I/81V-nVe1wlL.jpg)
![Core Carbon RingsCORE CARBON RINGS - Handmade Ring Band - Men's or Women's Carbon Fiber Twill Ring with Blue Glow Interior, Matte Finish, Glow-in-the-Dark, Durable, Waterproof, Sizes 4-16, Custom Band Widths - Image 5](https://m.media-amazon.com/images/I/71Ao8fkY-wL.jpg)

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**Shop now:** [https://www.desertcart.jp/products/135360467-core-carbon-ringscore-carbon-rings-handmade-ring-band-mens-womens](https://www.desertcart.jp/products/135360467-core-carbon-ringscore-carbon-rings-handmade-ring-band-mens-womens)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-02*