Peg Perego Ypsi Companion Seat – the reversible seat that transforms your Ypsi into a double or twin stroller. Transform your Ypsi into a double or twin stroller with the handy Companion Seat. Large and comfortable reversible seat approved for children from 6 months to 15 Kg. with a built-in zipped apron. Compatible with Ypsi single to double stroller only (available separately). FEATURES Ypsi companion seat Apron/leg cover Raincover Please note this will not fit on to the original Ypsi strollers as they are single strollers only. DIMENSIONS Size: 31 W X 47 H X 22 D Weight: 3. 15kg.