The city mini 4 wheel was designed to be one of the most lightweight easiest folding swivel wheel strollers on the market suitable from birth the city mini 4 wheel is the ideal lightweight travel stroller that maintains all the safety standards and style youd expect from baby jogger the city mini 4 wheel incorporates features such as baby joggers patented quick fold technology ventilated near flat reclining seat with weather cover universal city series mounting bracket and more perfect