Using the SmarTrike STR7 Grey Foldable Tricycle is easy. First, for assembly, no tools are needed. Just make a few clicks and it's ready to use. When your child is young, use it as a stroller. As your child grows, adjust it through the 6 stages until it becomes a regular trike. You can steer it with one hand easily. To switch between stroller and trike mode, it only takes seconds. For safety, the shock absorbers protect your child from bumps. You can decide whether you or your child controls the trike by pressing a button. When not in use, you can fold it up. Keep it clean by wiping it with a damp cloth. Make sure all parts are tightly connected before each use. It's suitable for kids 6 months and older, so always check if it fits your child's age and size.