Safe Biking with the aid of Helmets
Decide on the type of helmet you want full face helmets offer the best protection and are recommended over open face helmets. Always inspect the helmet before purchase. First thing to look out for is the strap that holds the helmet on (usually a seat belt type or a D-ring). The next most important thing is the Outer shell, normally made of injection-moulded polycarbonate or a laminate of glass fibre. Carbon fibre and kevlar helmets are rare in India and cost more that an average motorcycle! The outer layer resists abrasion amid penetration in case of an impact.
The inner is moulded polystyrene deforms on impact absorbing the force the blow. Helmets which have sustained an impact should be replaced since the inner lining is designed to take only one hefty hit. The cloth lining is there for comfort.
Never let the helmet roll on the ground, place it with the head aperture on the ground. Use only very mild detergents and polish on lids as solvents can attack shells and visors. Some helmets are quieter than others but none are so quiet as to block out wind noise so always wear ear plugs. The helmet must fit on your head evenly and without exerting excessive pressure at any point. If there is pressure try another size or brand. Replace your helmet after four years because the materials degrade with time.