Ключевые слова:
Test equipment, Helmets (protective), Field of vision, Winter sports equipment, Penetration tests, Optical properties of materials, Eye protectors, Face shields, Marking, Instructions for use, Design, Performance, Mechanical testing, Mass, Ageing (materials), Optical measurement, Drop tests, Sports equipment, Impact testing, Rigidity, Restraint systems (protective), Artificial ageing tests, Testing conditions, Shock-absorbing materials, Specimen preparation