Cordage tennis multifilament GUTECH PRO - protennis-shop.com
Cordages de tennis | DECATHLON
Amazon.com : Head Velocity MLT Black Colored Multifilament - 17 Gauge - Tennis Racquet String Sets 4-Pack (4 Sets Per Order) - Best for Comfort and Power : Sports & Outdoors
Types of strings: multifilaments - Racketpedia Blog