Expose your child to the fun of the outdoors with the Aosom Child Bike Trailer. Constructed from a steel frame that can support 2 children. Are far as security goes, the bicycle trailer for kids has a sling seat with a 5-point security harness to keep your children secure. The hand-lock brake system allows you to lock the trailer while it's parked. Folding this trailer up for storage is easy with no tools required.