![This full bed of poly has 40 hours of tennis on it. It was completely black and now it is turning white? I haven't noticed a change in performance but is it time to change the strings? : r/10s This full bed of poly has 40 hours of tennis on it. It was completely black and now it is turning white? I haven't noticed a change in performance but is it time to change the strings? : r/10s](https://preview.redd.it/this-full-bed-of-poly-has-40-hours-of-tennis-on-it-it-was-v0-n7xu0wt3mii91.jpg?width=1080&crop=smart&auto=webp&s=26bbc9ce417f64e89bb54f0a5632f7f1d800b2e2)
This full bed of poly has 40 hours of tennis on it. It was completely black and now it is turning white? I haven't noticed a change in performance but is it time to change the strings? : r/10s
![Amazon.com : Mokernali Tennis Racquet String, Durable Polyester 200m Polyester Tennis String Reel 200m Durable Polyester Tennis Racket for Increased Strength and Resilience(1.25mm) : Sports & Outdoors Amazon.com : Mokernali Tennis Racquet String, Durable Polyester 200m Polyester Tennis String Reel 200m Durable Polyester Tennis Racket for Increased Strength and Resilience(1.25mm) : Sports & Outdoors](https://m.media-amazon.com/images/I/81-zVtrHhmS._AC_UF350,350_QL80_.jpg)
Amazon.com : Mokernali Tennis Racquet String, Durable Polyester 200m Polyester Tennis String Reel 200m Durable Polyester Tennis Racket for Increased Strength and Resilience(1.25mm) : Sports & Outdoors
![KIMISS corde de raquette de tennis Corde de tennis 200 m Corde de raquette de sport 1,25 mm Fil de raquette en polyester (noir) - Cdiscount Sport KIMISS corde de raquette de tennis Corde de tennis 200 m Corde de raquette de sport 1,25 mm Fil de raquette en polyester (noir) - Cdiscount Sport](https://www.cdiscount.com/pdt2/8/7/1/4/700x700/kim7309587557871/rw/kimiss-corde-de-raquette-de-tennis-corde-de-tennis.jpg)
KIMISS corde de raquette de tennis Corde de tennis 200 m Corde de raquette de sport 1,25 mm Fil de raquette en polyester (noir) - Cdiscount Sport
![Amazon.com : Mokernali Tennis Racquet String, Durable Polyester 200m Polyester Tennis String Reel 200m Durable Polyester Tennis Racket for Increased Strength and Resilience(1.25mm) : Sports & Outdoors Amazon.com : Mokernali Tennis Racquet String, Durable Polyester 200m Polyester Tennis String Reel 200m Durable Polyester Tennis Racket for Increased Strength and Resilience(1.25mm) : Sports & Outdoors](https://m.media-amazon.com/images/I/716Oky+5XtS._AC_UF1000,1000_QL80_.jpg)
Amazon.com : Mokernali Tennis Racquet String, Durable Polyester 200m Polyester Tennis String Reel 200m Durable Polyester Tennis Racket for Increased Strength and Resilience(1.25mm) : Sports & Outdoors
![Amazon.com : Tennis Racket String Reel, Tennis String,Tennis Racket String for All Playing Levels and Styles,1.3mm/200m, Red Polyester String for Daily Training : Sports & Outdoors Amazon.com : Tennis Racket String Reel, Tennis String,Tennis Racket String for All Playing Levels and Styles,1.3mm/200m, Red Polyester String for Daily Training : Sports & Outdoors](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/81gJJgouYoL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : Tennis Racket String Reel, Tennis String,Tennis Racket String for All Playing Levels and Styles,1.3mm/200m, Red Polyester String for Daily Training : Sports & Outdoors
![Amazon.com : Ben Shelton Tennis Bundle - Yonex EZONE 98 Sky Blue Racquet (4 1/2") w Black PolyTour Strike 125 (Mains) & Yellow PolyTour Pro 125 (Crosses) at mid-Tension + Blue Pro Amazon.com : Ben Shelton Tennis Bundle - Yonex EZONE 98 Sky Blue Racquet (4 1/2") w Black PolyTour Strike 125 (Mains) & Yellow PolyTour Pro 125 (Crosses) at mid-Tension + Blue Pro](https://m.media-amazon.com/images/I/61Ygh1AWNML._AC_UF1000,1000_QL80_.jpg)
Amazon.com : Ben Shelton Tennis Bundle - Yonex EZONE 98 Sky Blue Racquet (4 1/2") w Black PolyTour Strike 125 (Mains) & Yellow PolyTour Pro 125 (Crosses) at mid-Tension + Blue Pro
![Zerone chaîne de raquette de tennis en polyester Chaîne de raquette de tennis Chaîne de raquette en polyester ronde pour - Cdiscount Sport Zerone chaîne de raquette de tennis en polyester Chaîne de raquette de tennis Chaîne de raquette en polyester ronde pour - Cdiscount Sport](https://www.cdiscount.com/pdt2/4/8/4/2/700x700/zer7450069012484/rw/zerone-chaine-de-raquette-de-tennis-en-polyester-c.jpg)