Biodegradable Tennis Strings
The Best Sustainable Tennis Strings: Biodegradable Synthetic Tennis Strings
Did you know that every year, tens of thousands of pounds of used tennis string are dumped in landfills, where it takes 400-600 years to decompose? Environmental waste has long been the unspoken, dark side of the tennis industry, with no meaningful solutions in sight – until now.
In December 2022, Velociti Tennis debuted the world’s first 100% biodegradable synthetic tennis string: Velociti Catalyst. This launch was a huge step towards a greener future for tennis.
On the cusp of 2025, Velociti Tennis introduced Velociti NEH Bio, a biodegradable upgrade to their well-loved NEH string, once again rocking the sustainable tennis string world.
ENVIRONMENTALLY FRIENDLY TENNIS STRINGs THAT DECOMPOSE 100X FASTER
Velociti Catalyst and NEH Bio are made with a patent-pending organic technology called Velociti-Bio. This additive helps both strings decompose 100x faster than other synthetic strings.
These strings will not start to decompose until placed in landfills, where specific microbes found in that environment spark the decomposition process. They will then fully decompose within three to five years. This is just 1% of the time it takes other synthetic string to decompose.
We're committed to protecting our environment...
Velociti will plant one tree for every 10 sets of Catalyst or NEH Bio string sold!
Premium Performance Tennis String
When you choose Velociti, you’re getting premium tennis products that also protect our planet. Our products perform just as well – if not better – than the competition and have the added benefit of environmentally friendly technologies and materials.
Velociti Catalyst and NEH Bio Tennis String Reviews
So, what are tennis players saying about these biodegradable tennis strings? Here’s a quick look…
Velociti NEH Bio Tennis String Reviews
During an NEH Bio Debut Event in Denver, competitive tennis players tested the new NEH Bio string, and here is what they said:
“I like it! It’s really soft in the hands – comparable to like a Wilson Sensation. Really great string and friendly for the planet!"
- 4.5 all-court player
“It feels great! Good power, nice all court feel. I like the access to power!"
- 4.5 baseline player with big serve
“I like playing with a soft syn gut, and this is definitely the best one I have found. It has really good durability for a syn gut, but doesn't give up anything on the feel. I love it! Velociti NEH Synthetic String (1 set)”
- 4.0 power player
Velociti Catalyst Tennis String Reviews
During an RSI Magazine professional playtest and evaluation, Catalyst received high ratings for durability, spin production and control. Here’s what the play testers had to say: “I really enjoyed this string and I love the white color! This will be my new string. I absolutely loved this soft, super-controllable, spin-friendly string—it did everything I wanted it to do. The feedback was kind and lively but not too much. I love it and will push this product.”
- 5.0 baseline player with moderate spin
“Excellent slip and snapback. Not only is this string durable, it stayed slippery for probably more than a week. I’d use this as a cross paired with a gut main string.”
- 4.5 touch player
“The string played surprisingly well. It was thicker gauge than what I usually play with, so I was pleasantly surprised at how it played. Good control, power and feel. Assuming it is a ‘poly’ of some sort, it was soft enough to not hurt my shoulder or arm. It did seem ‘stiff’ while installing, so again, another bonus. Overall, a good solid string.”
- 5.5 all-court player
WHERE TO BUY VELOCITI NEH BIO AND CATALYST
The best place to purchase Velociti Catalyst and NEH Bio is right here on our online store at VelocitiTennis.com.
You can also purchase our biodegradable strings at all Game-Set-Match, Inc. locations in Colorado and Nevada as well as at Mason’s Tennis, the premier tennis shop in New York City.
Want to shop our products locally? If you’d like to request that your local tennis shop carries Velociti Catalyst and NEH Bio, please email us at sales@velocititennis.com. We’ll reach out to them to get them a sample and coordinate an order.
SHARE YOUR EXPERIENCE ON SOCIAL MEDIA TO BECOME A CATALYST IN YOUR COMMUNITY
You can be a catalyst in the tennis world by sharing your experience with Velociti Catalyst and NEH Bio on your social media accounts.
Please tag us on Instagram: @velocitisports as soon as you try it! We’ll share your post in our stories to give you a shout-out.
You’ll not only let the world know you’re one of the first to try this revolutionary tennis string, you’ll also help inspire others to make changes to protect our planet.
Now that’s a WIN-WIN for everyone!
FREQUENTLY ASKED QUESTIONS ABOUT CATALYST TENNIS STRING
How much do Velociti NEH Bio and Catalyst cost?
Visit our online store for the most recent prices for Catalyst and NEH Bio.
Wholesale pricing is also available for select, pre-approved wholesalers. To become an approved wholesaler, please visit velocititennis.com/wholesale or contact sales@velocititennis.com.
I’m a professional stringer. How can I try Velociti Catalyst or NEH Bio?
Professional tennis racket stringers can request a free sample of Velociti Catalyst or NEH Bio by emailing our team at sales@velocititennis.com.
Please include the following info: your business name and address, number of rackets you string per year, and your business website or social media accounts.
Is there anything I need to know when stringing with Velociti Catalyst or NEH Bio?
You can string Velociti Catalyst just like any other polyester string. We recommend dropping the tension by a few pounds (5-10%) compared to a multifilament or synthetic gut. You can also try using Velociti Catalyst as a hybrid with a softer string in the crosses for a great combination of soft feel and tension maintenance.
When stringing with Velociti NEH Bio, simply follow best practices for stringing with a multifilament. Follow the specific tension guidelines for your racket, use smooth and well-maintained clamps to avoid damaging the string fibers, and tie off with knots that avoid excessive stress on the string.
What type of players are well-suited for Velociti Catalyst and NEH Bio?
Players looking for a durable, polyester string will enjoy Velociti Catalyst. The biodegradable technology featured in the string has the added benefit of improving the string’s tensile and knot strength. Catalyst received high marks from RSI Magazine string play testers for both durability and string production.
Players seeking a softer string, like a multifilament will enjoy the arm-friendly feel of Velociti NEH Bio. This high-performance string combines a soft feel with great snapback.
Will Velociti Catalyst or NEH Bio start to decompose on my racket?
No! Velociti Catalyst and NEH Bio will not start to decompose on your racket, in your tennis bag, or anywhere else you might leave it in your daily life. Specific microbes found in landfill environments are required to spark the decomposition process.
How do Velociti Catalyst and NEH Bio biodegrade 100x faster than other synthetic tennis strings?
Velociti Catalyst and NEH Bio feature a proprietary, patent-pending additive. A small amount of this organic additive is added to the polyester string to expedite the decomposition process.
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