Tecnifibre X-One Biphase - Natural - String Set Gauge:16 Luxilon Alu Power is Luxilon's

Luxilon Alu Power is Luxilon's most popular string line and the most popular string on the ATP and WTA tours (used by more than 50% of the Top 100 pros)

Material Construction: High density co-polyester

Luxilon 4G is on the firm side of the spectrum

These classic style short BB Practice short from KSwiss features 100% Polyester moisture wicking material to keep you cool

So you know these are high performance goggles

Tecnifibre X-One Biphase - Natural - String Set Gauge:16 Luxilon Alu Power is Luxilon'sAccording to Tecnifibre, the X One Biphase string uses High Heat Capacity (H2C) fibers, which allows the use of an innovative chemical treatment process called Trimerization. This new process increases the cohesion between chemical molecule links through extreme variations in temperature to result in ultimate dynamic efficiency (power) and exceptional feel. The new patented Biphasic process, with its visible marks on the string, extends string life by