Protective gear is an important part of every sports activity and it is used for the reduction of the possibility that an injury on the human body can be created. In this Master’s thesis, the review of protective gear is given and a shin guard was chosen as the protective gear type on which the impact numerical analysis is conducted with the software Abaqus/Explicit. Shin guard can be divided into two major parts, an outer protective shell and an internal absorption layer which were modeled in the software Solidworks. Boundary, as well as initial conditions for numerical analysis were modeled according to the information found in literature. Furthermore, alongside choosing the protective gear, a review of the anatomy and the most frequent injury mechanisms for the shin and the knee joint is given, and a standard that defines the experiment type and the expected results for shin guards is selected for modeling the simulation accordingly. As the shin guard is made out of composite materials, the mechanical properties of composite materials is shown. To validate the numerical model, multiply composite plate has been modeled according to the literature and the results confirmed the reliability of the numerical model for impact damage of laminated composite plate. To elaborate the way the software Abaqus works, formulae as well as a theoretical basis for failure criterion and plastic deformation of foam materials is given. In the end, the results of the numerical analysis for the absorption layer and the outer shell are shown, as well as, for coomplete shin guard, the contact force between the shin guard and the leg, as well as energies which are developed during the conveyance of kinetic energy from the impactor to the guard.