LIFETIME WARRANTY: Mockingbird strollers are built to last and come with a Lifetime Warranty, so you can rest easy knowing you'll always be covered.SINGLE-TO-DOUBLE: Expand from one to two seats using the Mockingbird 2nd Seat Kit, with 19+ configurations to suit every situation!INFANT-READY: This stroller offers three ways to stroll with an infant (or two!), including a Car Seat Adapter that works with almost any infant car seat (Graco, Chicco, Britax, Baby Jogger, Evenflo, Maxi-Cosi, Cybex, Nuna, UPPABaby). Car Seat Adapters sold separately at hellomockingbird.com.ONE-HAND FOLD: Fold with or without the seat attached. Automatically locks and stands upright when folded.SMART CANOPY: Extendable UPF 50+ canopy for maximum sun coverage, with a mesh section for breezy airflow. Magnetic peekaboo window for quiet check-ins, and premium spill-proof material for cleanliness.NEVER-FLAT WHEELS: Rubberized to mirror the smooth ride of air tires, minus the potential to pop or go flat.ADJUSTABLE HANDLEBAR: Six positions make it comfortable for anyone to push (kindergartners to NBA players welcome!).SUSPENSION: The stroller’s dual frame and seat suspension diverts vibrations away from your little one, producing a smoother stroll no matter where life takes you.