Introducing a brand new addition to the EXBOLT string series, EXBOLT 65. Similar to the EXBOLT 63, the Yonex Exbolt 65 Badminton String is constructed from a proprietary material called FORGED FIBER which combines durability, thin gauge and quick repulsion all into one. With the EXBOLT 65 a new layer is added over top the FORGED FIBER called the Elasticity Outer which increases the hold and improves overall control.