1

Material

 Acrylonitrile-butadiene-styrene copolymer (ABS). 

2

 Appearance

 The appearance conforms to the dimensions of middle vector curve and top horizontal curve size 270x207x215mm

3

Color

The outer surface color of the helmet is Dark blue (as per approved sample).

4

 Helmet Structure

The helmet is composed of the shell, buffer layer, wearing device, face shield, neck protector and etc.

5

Shell Appearance

There aren't defects such as dents, fragmentations, sharp points or thorns on the shell, the edges should be embedded with circle of soft and blunt materials.  

6

Visor belts and buckles

The protrusion of the buckles out of the surface of the shell is superior to 15mm, the protrusion of the belts out of the inner and outer surface of the shell isn't superior to 3mm, no burns on the belts or buckles.

7

 Light transmittance rate of visor

 not less than 85%.

8

Neck protector

The neck protector can be removed from the helmet, width of the neck protector 120±20mm.

9

Helmet weight (accessories included)

 1.5kg to 1.7kg.

10

Specifications and dimensions

M: Applicable for head circumference 560mm-580mm.

L: Applicable for head circumference 580mm-600mm. 

View: Horizontal view from left to right of the helmet is not less than 105^°, upper view not less than 7^° lower views, not less than 30^°.

11

Anti leakage of helmet

The test part of the helmet isn't stained after spraying it with the test liquid of 25 ml from all directions.

12

Visibility of visor

The diameter of the spots or stains on the visor isn't beyond 1mm, the number isn't more than 4.

13

Helmet penetration resistance

Drop a steel bradawl of 3 Kg from 3000mm ±5mm high of free fall on the helmet twice. The spacing of the two test places is no less than 75mm. The steel bradawl should not penetrate the helmet or touch the head form.

14

Flame resistance

Apply a mixture of 25mL composed of 50% toluene and 50% isooctane on the outer surface and the visor of the helmet and put it aside for 30 second, then ignite the flame directly on the top of the helmet. The flame should be off on itself within 10 seconds.

15

Impact Resistance

Shoot with the pellet (Weight 1 gm and diameter 5.5 mm) at the visor of the helmet. The visor don't shatter or be penetrated.

16

Monogram/Logo

Police monogram is made by aluminum alloy.

17

Wearing and belts width

Wearing requirements firm, comfortable and easy to take off, belts width: 20±2mm.