Baby Jogger® City Select® 2 Single-to-Double Modular Stroller, Eco Collection, Lunar BlackPolyester Fully featured modular stroller converts from single to double or triple stroller with glider board (second seat, infant car seat, and glider board sold separately) Easily lift and carry this stroller that is lighter than the original City Select One step compact fold, 20% smaller than the leading single to double stroller as compared to the 2020 UPPAbaby Vista V2 single to double stroller in the US Plenty of room between the seats means