We STRONGLY recommend a helmet with MIPS and a 5-star rating from Virginia Tech
Get a bike that works well, fits well, and is as light as you can afford
Cycling specific shoes have stiff soles and armored impact zones to protect little feet
Bring plenty of cold water make sure to hydrate beforehand
Snacks
Bring plenty of snacks to keep bellies full and make sure a full breakfast is eaten beforehand
Athletic Clothes
Wear breathable clothes made of athletic material - it can get hot