What To Consider When Getting Kids Into Biking - Once your child’s neck muscles have developed enough to support the weight of a helmet, he or she is ready to accompany you on your rides, either in a childseat or a trailer. Trailers make it easier to carry more than one child, along with the toys and games they might need to keep them entertained along the way. Child seats keep one child seated close to you on the ride. And, as they get old enough to ride a child’s bike, you might consider a trailercycle attached to your bike so they can practice riding with you.