Training Wheels
A classic children&'s bicycle accessory, training wheels help young riders learn basic bike-riding skills. Training wheels should only be used on level ground and always under adult supervision. When properly positioned, training wheels will leave the bike somewhat wobbly; if it rides like a tricycle, the wheels are too low. In that case, "it is really quite dangerous as they learn to ride faster and faster, because of the poor cornering and braking of a training-wheel equipped bike," states the Sheldon Brown website.
Helmets
Helmets are used to protect the bicycle rider in the event of a fall or a crash. Look for helmets that fit well and are approved by the Consumer Product Safety Commission (CPSC). The helmet should not impair the rider&'s vision and needs to be in a color or pattern that will stand out to motorists (neon colors or white are good options). Follow manufacturer&'s instructions for replacing the helmet; always replace after falls or accidents.
Safety Gear
Noisemakers, flashing lights and reflectors serve a dual purpose. Not only are they fun for the children, but also alert drivers to the bicyclist&'s presence. Blinking LED lights don&'t require a lot of battery power and are good for night riding.
Gloves
Bicycle gloves not only give children a good grip on the handlebars, especially in areas where the terrain may not be smooth, but also protect hands from unpleasant scratches and road burn in the case of a fall. Look for fingerless gloves, which will last a little longer as your child&'s hands grow, and replace them when they show signs of wear.