These models are meant for active parents who want to walk fast or jog while they are out with the infant. Extra features on these strollers can include a wrist strap, wheels that are all-terrain, weatherproof fabric, a hand brake, increased suspension, a storage pouch, a handlebar that is adjustable for height, and a construction that is sturdier for impacts and bumps in the ground surface. Most of these have three wheels and are easy to compact down and fold.