Great for players looking to add maximum spin while also maintaining feel and control 100% recycled string composed of recycled PET bottles and packaging displays; Diamond-shaped strings enhances spin potential by gripping the ball to increase RPMs without altering swing Eco Rough can work well in a full bed, or in a hybrid, and we have found the string to be surprisingly soft for a co-polyester with solid spin potential as well. OIML Precision Class F2 Weight Set with NVLAP Accredited Certificate Aazon.co : Luxilon ALU Power Rough 125 Tennis String - 100 Reel... Luxilon Alu Power Ocean Blue 125 200m Rulo Kordaj Okyanus mavisi WR8309601125 Construction: Co-Polyester (made from 100% recycled materials) Gauge: 1.25 mm / 17 G Length: 40 ft Color: Silver The string features a textured surface with a softer, more forgiving feel as well as additional spin. The string is dented at 45-degree angles on both sides in different directions which improves durability thanks to the oval shape. Dented surface delivers softer and more forgiving feel; High durability due to a larger shape surface catching the ball upon contact Luxilon 4g Review: Luxilon Eco Rough 1.25mm - Sustainable Tennis Strings With A Luxilon Eco Rough 125 Tennis String Trimmer