The Li-Ning 3D Calibar X Boost badminton uses the 3D Calibar Technology and features a high-tech geometric frame design that greatly reduces air resistance. It provides you with higher swing speeds for stronger smashes and best-suits players who rely on peak power in their gameplay. The racket has been engineered to perfection by devising TB Nano, Aerotec Beam System, MPCF Reinforcing technologies. This is a BOOST Series racket featuring a flexible and medium shaft, moderate weight, and is the definition of an 'All-rounder' racket. This series is a perfect match partner that will help you adjust to any situation on the court.