PEG YPSI Stroller + Primo Viaggio Nido Car Seat Travel System | Specialty Store Exclusive!YPSI The Ypsi Stroller paired with the Primo Viaggio Nido infant car seat, is just what you need to start new adventures with your growing family. The full featured lightweight single to double offers more agility on the road, through narrow spaces, or in crowded areas. The Primo Viaggio Nido comes equipped with a premium base with a Load Leg and built in Anti Rebound Bar. With the purchase of "Double Adapters" your Ypsi can turn into a double