Please wear a helmet when riding a bike. (And don’t worry — helmet hair is cool now.)
 

Tips and tricks

Be sure your helmet fits properly. 

• Wear it level on your head and make sure the bottom of the pad inside the front of the helmet is one or two finger widths above eyebrows 
• Make sure that it’s not loose; your helmet should fit snugly all around, with no spaces between the foam and your head.
• Tighten the chin strap so that no more than one or two fingers fit between your chin and the strap.

You can find more information about helmet safety and sizing from the CDC.