
Common European Norm (CEN) ~ http://www.cenorm.be
BS EN 966: 1996 Specification for helmets for airborne sports
BS EN 1077: 1996 Specification for helmets for alpine skiers
BS EN 1078: 1997 Helmets for pedal cyclists and for users of skateboards and roller-skates
BS EN 1385: Specification for helmets for water sports
BS EN 1080: 1997 Impact protection helmets for young children
BS EN 12492: 2000 Mountaineering
BS EN 13781: 2001 Snowmobiles and Bobsleighs
BS EN 812: Specification for Industrial bump caps. NOT suitable
Note - the CEN standard is the least demanding in impact testing requirements.
Consumer Product Safety Commission (CPSC) ~ http://www.cpsc.gov
American Society of Testing and Materials (ASTM) ~ http://www.astm.org
ASTM F-1447-02 for Recreational Bicycling or Roller Skating
ASTM F-1492-00 for Skateboarding and Trick Roller Skating
ASTM F-1849-00 for Short Track Speed Ice Skating (Not Ice Hockey)
ASTM F-1952-00 for Downhill Mountain Bicycle Racing
ASTM F-2032-00 for BMX Cycling
ASTM F-2040-00 for skiing and snowboarding
ASTM F-1045-99 for Ice Hockey
WK3457 for motorcycles and motorscooters
WK3458 for Whitewater Sports
Snell Memorial Foundation ~ http://www.smf.org
N94 - Multisport Helmet Standard (in-line skating and skateboarding)
RS-98 Recreational Ski & Winter Sports
S-98 Ski & Winter Sports
B-90A, B-95A, B-90C, B-95C for use with Bicycles
K-98 for Karting
M2000 for Motorcycles
SA-2000 for Competitive Automotive Sports
N94 - Multi Impact ~ http://www.smf.org/standards/n94std.html
NOTE: Use helmets only for sports for which they are certified.
Use of helmets for sports for which they are not certified may lead to death or serious injury.
a helmet that meets the standards will only provide adequate protection to reduce the risk of head injury.
What Helmet Size

Head Injuries ~ signs and symptoms
A human brain can withstand ~ 400G without ill effect.
From 400-700G causes concussion with a variable period of loss of consciousness.
700G+ results in permanent brain damage.
A helmet will help reduce the chance of a skull fracture and absorb some of the impact but will not stop
concussion if the impact is hard enough.
Nothing stops your brain hitting the inside of your skull.
The signs and symptoms of a head injury may occur immediately or develop slowly over several hours.
The following symptoms suggest a more serious head injury that requires emergency medical treatment:
Loss of consciousness, confusion, or drowsiness
Low breathing rate or drop in blood pressure
Convulsions
Fracture in the skull or face, facial bruising, swelling at the site of the injury, or scalp wound
Fluid drainage from nose, mouth, or ears (may be clear or bloody)
Severe headache
Initial improvement followed by worsening symptoms
Irritability (especially in children), personality changes, or unusual behavior
Restlessness, clumsiness, or lack of coordination
Slurred speech or blurred vision
Inability to move one or more of your limbs
Stiff neck or vomiting
Pupil changes
Inability to hear, see, taste, or smell
DO NOT....
... take aspirin, because it can increase the risk of bleeding. Seek medical attention first.
... wash a head wound that is deep or bleeding a lot.
... remove any object sticking out of a wound.
... move the person unless absolutely necessary.
... shake the person if he or she seems dazed.
... remove a person's helmet if you suspect a serious head injury.
... pick up a fallen child with any sign of head injury.
... drink alcohol within 48 hours of a serious head injury.
If any doubt call for an Ambulance/Medical Services.