Soft poly . Feels amazing
"Love this string!"
Tecnifibre
REDCOD16:SET
Tecnifibre Pro Red Code 16G is one of the most well rounded polyesters on the market. The feel at contact is crisp, with easy access to spin and a surprising level of comfort. Pro Red Code is more comfortable than your average co-polyester string.
Material: High Premium Copolymer- Polyester
Color: Red
Length: 40 feet / 12.2 m
Gauge: 16g / 1.30 mm
Benefits:
- Higher level of performance (more power)
- Higher level of tension resilience
- Great comfort (limited shock over tension)
For more information on strings, see our following blog posts:
Tecnifibre €™s new Polyester String: The Ice Code Cometh
String and Tension Tips from Tennis Express Stringing Experts
Need help selecting a string? Check out our Choosing The Right Tennis String guide for more assistance.
Any original shipping fees are none refundable.

| From | To | Standard Ground* | 2Day | Next Day | |
|---|---|---|---|---|---|
| $0.00 | $49.99 | = | $5.95 | $15.95 | $29.95 |
| $50.00 | $149.99 | = | Free | $15.95 | $34.95 |
| $150.00 | $199.99 | = | Free | $19.95 | $39.95 |
| $200.00 | $9,999.99 | = | Free | $19.95 | $39.95 |
| From | To | USPS Priority* | |
|---|---|---|---|
| $0.00 | $99.99 | = | $19.95 |
| $100.00 | $199.99 | = | $39.95 |
| $200.00 | $9,999.99 | = | $49.95 |
Orders being shipped outside of the Contiguous US or APO addresses will ship by means of the United States Postal Service (USPS) and in some cases FedEx.
**Shipping via USPS Priority provides minimal tracking information and normally delivers within 5-7 business days.
*** Any shipping promotions offered by Tennis Express DOES NOT apply to shipments outside of the contiguous 48 states.
**** Excludes tennis balls, court equipment, stringing machines, ball machines and all oversized items.
At this time, Tennis Express only ships to the United States and all US Territories including Puerto Rico, US Virgin Islands, Guam and military bases. Due to manufacturer restrictions, we are unable to ship to countries outside of the United States.
Return Policy
Tennis Express believes in providing our customers with the best selection of tennis products and innovative game improvement gear. If the products are not to your liking, please take comfort in knowing you can return or exchange unused products within 30 days of the delivery date. Used or worn product is ineligible for a Refund. However, Tennis Express may issue a partial store credit for product returned in a used or worn condition. Credit is at the discretion of Tennis Express based on the amount of wear and use on the product. Store credits expire after 90 days.
How to Return
Submit a return request by visiting Return Portal.
1. Log in with your order number and email.
2. If your order has more than one item, select the items that you want to return.
3. Select the item condition and reason for return. Optionally add any comments.
4. Save and continue to return options.
Once your return request is approved, you'll receive an email with a label or QR code for your FedEx return label and shipping instructions. After the product is returned, you receive a refund.
To qualify for a FREE prepaid FedEx Ground return label:
* Your order must be over $50 (before tax and any shipping fees).
* After your return, the value of what you keep must still be over $50 (before tax and any shipping fees).
* Limit 1 free return label per order.
* Valid only for the continental United States.
Example: You place a $75 order and return a $30 item. Your remaining total is $45, which is under $50, so this order does NOT qualify for free return shipping.
If your order does not qualify for free return shipping, you can still use our return portal for a flat $6.95 fee, which will be deducted from your refund. Otherwise, you're responsible for shipping items back to us, so please hold onto your tracking information.
Please note:
* If you use one of our prepaid labels, you may drop the shipment off at any authorized FedEx or USPS Service Station.
* Refunds will be processed within 3-5 business days from the day we receive the return.
* Any original shipping fees are non-refundable.
* Any store credit issued will expire within 90 days.
QUESTIONS: If you have any questions about our return process, please contact us before shipping back your return: [email protected]
Apparel Returns and Exchanges
* Apparel must be unworn, unwashed, and unused with original tags attached.
* For safety concerns, we cannot accept used or washed clothing.
* Accessories must be unworn, unwashed, and unused with original tags attached.
* Apparel items carry NO warranty from the manufacturer.
Shoe Returns and Exchanges
* Shoes must be in NEW and unworn condition with original product packaging.
* DO NOT use the original shoe box as the outer shipping box. This will ruin the product.
* Accessories must be unworn, unwashed, and unused with original tags attached.
* For shoe outsole warranty claims, please visit our Shoe Warranty page.
Final Sale Notice: All Clearance Shoes and Apparel are Final Sale and not eligible for returns or exchanges.
Racquet and Paddle Returns and Exchanges
* Racquets or Paddles must be in NEW and unused condition with original plastic covering the handle intact.
* Make sure any racquets or paddles are protected to safely endure shipment.
* For racquets strung at Tennis Express, the cost of the string will not be refunded.
* All sales are final on the purchase of used racquets.
* For racquet warranty claims, please visit our Racquet Warranty webpage.
Drop Ship Returns
* Items shipped directly from the manufacturer must be returned to the manufacturer within 30 days of the original delivery date.
* You must request a Return Authorization (RA) from Tennis Express prior to shipping. Please email [email protected] with your return request.
* Drop shipped items must be in new and unused condition with original product packaging.
* Any restocking fees or return shipping costs will be paid for by the customer.
Damages and Issues
Please inspect your order upon reception and contact us immediately if the item is defective or damaged, or if you receive the wrong item, so that we can evaluate the issue and make it right.
Unfortunately, we cannot accept returns on gift cards.
Last Updated 05/07/26
Overall rating: 4.7777777 / 5 from 18 reviews.
Review topics: ["feel","control","power","string","polyester","spin","products"].
"Love this string!"
"All good. Soft feel, durable, plenty of control. I break strings all the time and so was looking for something more durable that still gave me touch and control. So far, so good w the Red Code !!"
"The durability of this string really impressed me because it lasted longer than any other polys Ive tried so far. It was low powered, had crisp and firm feel, and provided excellent control. The thing that I loved the most about this string was hitting flat groundstrokes. However, this string didnt generate spin easily for me. The ball didnt kick up high with my topspin serves and groundstrokes. I believe its due to the round shaped surface. Overall, pro red code was a great string and I will try again sometime."
"Super string. Super quality product"
"This is a great string to have if you are looking for durability and a semblance of feel and control however this string is not for the timid, if you are looking for power you have come to the right place it really takes off upon contact. Excellent choice for a hybrid string job which Ive installed on my racquets. Give it a go! After all John Isner cant be wrong. - Rodney B. Mene"
"These pro redcode 16s are very responsive and look great in my Tecnifibre TFlight 295 racquet. I get good spin and power. They feel right when I hit volleys. I had my racquet strung at 58# tension and they dont move around at all. I would restring my racquet with these."
"I love these strings they have been a great match for my baseline play style and also work well when I approach the net. All around great string"
"These strings are amazing they are a very soft feeling string. If you want a good string thats durable and wont hurt your arm of elbow,then these are the strings for you!"
"The Pro Red Code 16g is a pretty good polyester for two reasons. Its very budget friendly and at the same time a touch softer that most polyesters. This makes it good for players with arm issues. It is good feel and spin potential. Theres a reason why so many college players continue to play with this string beyond college!"
"I test lots of strings. This string has great feel, spin and control. John Isner uses it and I can see why. I am a hard hitting base-liner with plenty of spin, but the ball always falls into the court with these strings. I have been using Redcode for several weeks and am very happy with everything about this string. Tension stability is good, but not great. Im happy with that, because most strings I hit with lose tension quickly. This string outlasts RPM, and does not move around hitting heavy spin. The string has a great pop, when hit correctly and is one of my favorites. If you are using control strings like: MSV, Weiss Cannon, Original, Signum Pro, and are missing some power then try this string. Tested on a Wilson Prostaff 95 at 55-57lbs."