Compression tubes on each side assist patellar tracking

Provides consistent performance

Battery Life: 3-4 Hours

the original RolDri water removal system has a unique "rolling seal" action that continually squeezes water ahead of the roller and adapts to the contours of the court

Tecnifibre NRG2 17 1.24 COLLECTION-Activity-Racquetball Compression tubes on each sideTecnifibre NRG2 17 tennis string is designed for maximum power with maximum feel through the use of PU and Elastyl fibers with an SPL coating. This string uses PU (the same material used for cushioning in your shoes) to dampen shock for a soft, comfortable feel. Whether you suffer with arm pain, or you're just looking for a powerful, playable string, this is a must try. The 17 gauge is thinner for improved feel. PU inside has 400% elasticity for