For the parent - adjustable carrying height for proper placement; waist buckle; chest buckle; pockets at waist and shoulder strap for small essentials (car keys, small wallet, phone) and mesh side pockets for easy reach items; stands up independently but also folds in; large pocket (multiple water bottles and a jacket fit) It also has a matching zip on day backpack with one large pocket and one small pocket that would fit a small wallet and has a key ring. For the kiddo - adjustable seat height for torso placement; adjustable foot stirrups for a more comfortable ride; shade shelter with mesh to stay out of the sun and fend off some of the insects; rain cover. Ours is the 2015 model and survived three kids, including being checked for an international flight. This was one of our favorite kid-related items and is ready for a new home. The 2025 model currently retails for $395.