Tecnifibre NRG2 16 Black 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.

• PU inside has 400% elasticity for ultimate comfort and a dynamic performance.
• Multifilament Synthetic string.