Researchers from National Armed Forces in cooperation with researchers from Riga Technical University have started improvement program of Soldier Individual Protection System. Within mentioned program researchers made a research on the nature of blast overpressure, as one of the important function in Soldier Individual Protection. The physical nature of blast overpressure has been analyzed as a threat, as well as influent on soldier health and consequences to be under influent of blast overpressure. Possible technical solutions available within Soldier Individual Protection System were evaluated, as well as solutions and researches available in open NATO/EU sources. Effectiveness of the Med-Eng EOD9 bomb suit, produced by company Allen-Vanguard Corporation was defined by source analyses. Bomb suit provides from 82% till 97% decreasing of the blast overpressure. EOD/IEDD units of the National Armed Forces have such bomb suits and use them in daily routine making neutralization operation of improvised explosive devises and unexploded ammunition. However due to technical weight and design parameters of the suit applying it for the protection of the individual light infantry soldier is not possible. Implementation of helmet pads produced by Skydex Technology Inc. reduces levels of the blast overpressure on 35%. Soft armor panels of the load bearing armor systems can increase and also decrease influent of the blast overpressure depend on structure of the soft armor material. Combination of the soft armor panels with hard armor panels decrease influent of blast overpressure.