Ключевые слова:
Helmets (protective), Aquatic sports equipment, Canoes, Sports equipment, Protective clothing, Sports clothing, Performance, Circumference, Projections, Straps, Buoyancy, Shock-absorbing materials, Impact strength, Quick-release mechanisms, Marking, Instructions for use, Impact testing, Mechanical testing, Artificial ageing tests, Test specimens, Specimen preparation, Testing conditions, Test equipment, Safety measures, Accident prevention, Rivers, Classification systems