The X-ONE BIPHASE string is the best-performing string in this range on the 3 criteria of playability, durability and integrity. The special feature of this range is the wear indicator, which allows the player to change the string before it breaks completely. This indicator is manifested by the significant fraying of the string at the point of impact of the ball. Tecnifibre is the leading brand in strings and has built its success on the design and production in France of the first multifilament strings. These strings are renowned and appreciated for their power, their comfort and their strong capacity to preserve their qualities over time. Colour : natural Main material: Polyamide, polyurethane, silicone finish Recommended tension between 22 and 25 kg Maximum tension: 32 kg Not recommended for heavy string breakers (< 10 hours of play). String made in France. PU 400: 400% elasticity for great comfort and dynamic performance. Elastyl® fibres (50%): +12% elasticity compared to a standard PA. Provides enormous elasticity for maximum power. H²C Fibres (50%): Maximises performance with high temperature fibres for better tensile strength. Biphase Process: Exclusive "pre-stretch" process to provide better tensile strength and life. Visible and noticeable on the string, it increases the spin. Best seller worldwide The performance of the casing without the defects of the casing.

Specs

• Gauge: 17
• Construction: Multifilament
• Composition: Polyamide
• Colour: Natural
• Length: 660 ft. / 200 m.

SKU

01RXO124XN

Shipping Policy

ℹ️ Canada Post Strike - No impact on our deliveries: We've partnered with Purolator and UPS to ensure your gear arrives on time.

• C$35 for orders total under C$99
• C$25 for orders total between C$100 – C$250
• C$15 for orders total more than C$250

Customers are required to cover postage on all returns unless the item(s) in question are defective. We will cover your return postage if the error is our fault (defective or wrong item sent).

All returns and refunds need to be approved prior to returning.
Please email info@atrsports.com to process the refund/return.

PRODUCT RETURN CONDITIONS

Racquets:

• To be eligible for a return all racquets must be in brand new condition. 
• If used or restrung, racquets are no longer returnable. Plastic wrap on the handle must be intact.

Footwear: 

• When trying on footwear for the first time we ask that clean socks be worn. 
• Please make sure to test the footwear indoors on a carpeted surface, so as not to damage the soles. 
• The original shoe box must be returned alongside the footwear. Please be sure to place the shoe box inside a shipping box so as to prevent damages during transit. If these conditions are not met we will not be able to process the return and refund.

Apparel: 

• All original tags must still be attached to the garment(s). 
• Please be mindful of deodorant, makeup or perfume that may rub off on the garment, and beware of jewelry that may catch or tear fabric. 
• Apparel that is returned damaged, or has been worn, will not be refunded

Bags:

• All bags must contain original tags and returned in the same condition as sold.

Strings: 

• Sets and reels of string may be returned if they are still in the manufacturer's packaging, unopened and unused. 

Accessories: 

• Overgrips, Dampeners, Goggles, and other all other  accessories may only be returned if original packing is intact and accessories are unused. 

Balls: 

• To be eligible for a return, tennis ball cases and tubes must be unopened. 
• If opened we are unable to accept them as a return, due to the fact they become depressurized after opening the seal. 

Damaged/defective items: If you believe an item is defective or damaged, please contact us via email: sales@atrsports.com.

The following items are NOT eligible for refund or exchange:

• Items that have been used, worn, washed, or smell of perfumes, scents, or odor.
• Shoes that have sock fuzz, lint, hair, dirt or any other foreign substance inside the shoe, or if there is any visible wear inside the shoe, on the soles, or if there is any pebbles, stones or clay material embedded in the sole.
• Racquets that have been regripped or restrung. 
  
  

• Sale items over 40% off are FINAL SALE.

• Items that do not abide by our return policy conditions will not be eligible for a return and or refund. 

Once the returned merchandise has been quality checked and approved, ATR Sports will issue a refund to the original method of payment and a confirmation e-mail will be sent to you. 

Please note that it may take up to 5 business days after receiving the merchandise to process the return request. 

It may take your financial institution additional time to process the transaction and update your bank statement. Please note that during busy Sale Seasons or holiday periods, this process may take a little longer.