From the Manufacturer
Si Travel System - the "goes anywhere" system includes infant car seat and compact convenient stroller. The infant seat attaches to the Si stroller with two revolutionary straps. Slim umbrella one-hand fold closes compactly and stands alone when folded. The Primo Viaggio ES is designed for infants from 5 to 30 pounds. The Side Impact Protection (SIP) is built into the infant seat for maximum safety and comfort. The Si stroller seat reclines and can accommodate up to 45 pounds. Also new, hinged removable front bar. Si Stroller weighs just 13.2 pounds, and the Primo Viaggio ES infant car seat weighs 18.3 pounds.
The convenience to Go Anywhere with one single purchase Si stroller Primo Viaggio Car Seat Compact stroller Infant car seat