All Verdasil™ silicone pieces are certified FDA food-grade under the following certification.

• American Food and Drug Administration (FDA) under the 21 CFR number 177-2600 

FDA 21 CFR 177.2600 refers to the U.S. Food and Drug regulation covering rubber materials suitable for repeated food contact. This means they use ingredients that won’t leach harmful chemicals into food and have validated their claims with formal migration testing and compliance documentation. The material is also certified under EC1935/2004, offering an international stamp of approval alongside the FDA mark. This means:

• FDA certification guarantees the silicone won’t contaminate food with toxins or microplastics—vital for any part that touches food.
• It maintains stability across extreme temperatures and resists chemical reactions. That preserves both safety and function under hot, cold, or sterilization processes.
• Silicone is non‑porous and easy to clean, resisting bacterial growth—ideal for food and medical environments.

We are currently sourcing our .8mm silicon used for bracelets, necklaces, chokers and earrings from the UK. We chose companies that are WRAS and REACH certified in Europe in addition to FDA compliant in the USA.

WRAS (formerlyWRC) approval means a material is certified safe for contact with drinking water in the UK. It's a quality and safety standard used mainly for plumbing, rubber, and plastic materials that may come into contact with potable (drinkable) water.

REACH - Registration, Evaluation, Authorization and Restriction of Chemicals

Applies to: All chemical substances in products sold or imported into the EU/EEA.

• Covers chemicals used in manufacturing, not just final products.
• REACH compliance means no hazardous chemicals like phthalates, PAHs, or heavy metals.
• Many food-grade or medical-grade silicones are REACH compliant.

Food grade FDA silicone is essential for ensuring safety, compliance, and reliability in food and medical applications. Its non-toxic, chemically inert, and durable properties make it ideal for critical products like silicone seals, gaskets, and tubing.

Unlike regular silicone, which lacks FDA certification, FDA-compliant silicone meets stringent regulatory standards, ensuring safe and high-quality solutions for demanding environments.

Food grade silicone is odorless, non-toxic, and free from harmful chemicals.

Sustainable by Design

Crafted from non-toxic silicone, Verdasil™ is certified safe for both people and planet. Unlike disposable alternatives, this material promotes durability over disposability, reducing waste with every use.

Produced with a lower environmental impact, it’s the smart, sustainable choice for applications that demand performance and responsibility.

Its certified safety, non-toxic profile, and lower-carbon manufacturing process support ESG goals and green procurement policies—while still performing under pressure.

Key Benefits

• Recyclable & Non-Toxic — Made from clean, safe silicone with no harmful additives
  
• Certified Safe — Meets FDA & EU food-grade standards
  
• Built to Last — Designed for long-term use, reducing waste over time
  
• Lower-Impact Production — Less energy, fewer emissions, and no petroleum-based fillers

Verdasil™ is also fully recyclable. Companies like Eko Sustainable Products recycle silicone into oil used for lubrication, shine, and surface protection. Show your support by choosing recycled silicone oil from Eko.

We receive donations from local area bike shops. The majority come from the Cycle Loft in Burlington, Massachusetts (now TREK). As people come in withe flat tires or service repairs, the shops set aside the tubes for us. We then pick them up, wash them, sort them, cut them and then wash them again!

Although all our products are made from used bicycle tubes, we have a multi-step process to ensure that all products are of the highest quality. Some of the steps we take are listed below.

1. We only use the parts of the tube that are not fully worn. Generally the sides of the tube are very high quality compared to the center of the bicycle tube.
2. We clean the tubes at multiple points in the creation process.
3. We use a standardized sizing system for all our jewelry so that all sizes are the same regardless of style.

There are a few ways you can make your Kaden & Kai Bicycle Tube Jewelry shiny.  One option is to mix one part lime juice with 3 parts olive oil. Once mixed, you can use a cloth, sponge or brush to spread the mixture evenly across the jewelry and then let it air dry. Another option is to use a rubber boot protector instead of the lime juice/olive oil mixture.

The shiny finish will make the jewelry appear to be darker black as well.

Note: This is not needed for Verdasil™ silicone jewelry.

No. We thoroughly clean all the tubes a few times during the making of the jewelry. Our jewelry should not leave any type of mark on your body. With that said, sometimes when taking the jewelry off the display card, you will see marks. This is generally from the rubber moisturizer we put on the tubes prior to packing them.

Whether you purchased the item for yourself or someone else, we are happy to exchange the item you received for the right size or provide an extender at no cost if we do not offer the size you are looking for. The steps to make the exchange are as follows:

1) Contact us by email at info@kadenandkai.com within 30 days of the purchase date and let us know what size you have and what you are looking for. If we have the size, we will exchange it for you, if we do not make the larger size, you will have the option to receive a free extender that can be cut to size, exchange your bracelet for another bracelet that comes in your size or receive a refund. We provide pre-paid envelops for exchanges.

2) To exchange the bracelet, get a refund or store credit, send the bracelet USPS first class mail in a standard envelop. The bracelet should be wrapped in a sheet of paper.

3) If you purchased the item and want a refund, we will refund you once we receive it. If you received it as a gift, we will provide store credit in the amount of the purchase.

4) If this is an exchange, once we receive the bracelet, we will send out a new bracelet in the requested size.

Prior to April 1, 2025, the hardener on the anchor part of the clasp, or the "T", was a high performance industrial grade adhesive. As of April 2025, we have switched to a rubber adhesive made for repairing tires.

This rubber adhesive is less likely to harden or become brittle over time (thus less chance of cracking), and it has high strength, long-lasting viscosity and high-temperature resistance, ensuring that the bonded rubber items will remain intact even at high temperatures. It is also waterproof.

Because bicycle tubes are inherently soft, we added adhesive to the clasp for two main reasons:

1) To make the anchor "firm." This makes it easier to pull the anchor clasp through the hole when putting on your bracelet, necklace or choker.

2) For an added level of protection against tugging. The anchor shape was designed to make sure that the clasp does not come undone, however the adhesive helps to keep your jewelry on even if gets tugged by a shirt or jacket.

If you purchased a jewelry item prior to April 1, 2025, that uses the high performance industrial grade adhesive, and you have a crack, you can repair crack it with super glue or exchange it. We are happy to exchange it for one with the new rubber adhesive. Contact us if you would like to make an exchange.

If you purchased a jewelry item prior to April 1, 2025, that uses the high performance industrial grade adhesive, and you have a crack, you can repair it or exchange it.

Because bicycle tubes are inherently soft, we added adhesive to the clasp for two main reasons: 1) To make the anchor "firm." This makes it easier to pull the anchor clasp through the hole when putting on your bracelet, necklace or choker 2) For an added level of protection against tugging.

However, in some cases, it will crack.

You can repair a crack with super glue. However, we are happy to exchange it for a bracelet made with the new rubber adhesive. Contact us if you would like to make an exchange.

Since 202, all of our jewelry has been made in our Lexington, Massachusetts workshop.

Yes! Because polypropylene bags are woven using fabric fibers, they are typically made almost entirely of plastic, which means they are both fully recyclable and reusable.

The polypropylene bags we use are non-toxic, odorless acid free, and 100% food grade safe. Some suggestions for reuse might be to store snacks, make-up, kleenex or use as an on-the-go wallet when carrying a small purse or backpack since they can be resealed and are easy to see through.

We announce new products on Instagram, Facebook, on our website and via email in our quarterly updates.

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