2 rackets for £99.99

Liquid metal is the new wonder material from Head that is said to not deform on impact and thus result in "ultimate energy return."
"The unique liquidmetal atomic structure is 2 1/2 times stronger than Titanium and delivers 29% more power." direct quote from Head R&D.
Other features include the "Total SweetSpot Construction (TSC)" which is a corrugated structure in the grey areas providing increased torsional stability in the racquet head.
Head is also using Intelligence fibers in the shaft to help reduce the vibration coming through the frame
NB. Next day delivery is NOT possible for custom strung rackets.