This product is available to retrofit previous CITY models. 

Need more seating room? Add 3" of seating room to your Travel Buggy with these easy to install arm rest spacers. Simply remove the arm rests, add the spacers and fasten the arm rest.

Package includes 4 spacers (2 per side) and 4 longer bolts. Total installation time is less than 3 minutes. Considered "easy" to install on your own. The Allen Key provided with your Travel Buggy is the only tool required.