SCHEDULE 1 REGULATION 12 Figure 3. Vertical Field of Vision Requirement 3.3.4 Ventilation It is the manufacturer’s responsibility to provide for adequate ventilation in the headgear design. 3.3.5 Retention System The retention system should be attached so that the headgear remains in its normal position during play. The chin strap that secures the headgear should be affixed to both sides of the headgear and pass under the lower jaw in close proximity to the jaw and the neck. The minimum width of the chin strap shall be 15 mm. Buckles or similar hard fixings may not be used. Rubber buttons or Velcro® type fixing materials are acceptable. 3.4 Performance Requirements 3.4.1 Impact Attenuation When tested in accordance with the procedures specified in Section 4.3, the peak acceleration of impacts delivered to test locations shall not be less than 200g. 3.4.2 Retention System Strength When tested in accordance with Section 4.4, the strap should stay intact and closed when loaded with a 7 kg mass but should fail when strained dynamically by an additional mass of 10 kg allowed to fall through 300mm. Last update: 3 January, 2017 220
World Rugby Handbook
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