This convenient base fits your PIPA RELX (sold separately) and makes it so much easier to transfer baby and seat between cars. A 5-Second True Lock installation makes set up swift, simple and, above all, safe. On-the-go recline keeps baby comfy and supported. Fits all nuna PIPA series infant car seats (sold separately) Open belt path for easier install Four-position adjustable rigid latch to remove or reduce the gap between vehicle seat and base Four-position on-the-go recline Bubble-free recline angle guides clearly confirm the perfect riding angle Locking three-piece steel stability leg has a wide range of adjustment to fit most vehicles including middle seats Steel stability leg helps minimize forward rotation during impact Colored installation indicators confirm correct connections to the vehicle Anti-rebound panel Plastic/steel Imported Kids' Wear