From Nuna, this insert features: Trips out aren't always that easy with a new baby. But with the PIPA infant car seat in your life even spontaneous car rides to the park can happen, well, spontaneously.When it's time to go, you'll be able to both easily install your PIPA and then slip your little one from the crook of your arm to the safety and comfort of the seat, simply and swiftly. It's that easy. Really. The Nuna PIPA Series Insert can be used as necessary to provide a snug fit for small babies in the Nuna PIPA, PIPA Lite and PIPA Lite LX The low birth weight pillow can be used in the infant insert for even smaller babies, but should be removed once a snug fit can be achieved without it, at approximately 11 pounds Headrest's patented Tailor tech™ memory foam provides a comfortable custom fit Harness and crotch covers included Two-piece design grows with baby Fits most Nuna PIPA series car seats * excludes PIPA lite rx & PIPA urbn GOTS™ certified organic cotton fabric & dye Insert dimensions L 11.4 in x W 4.3 in x H 15 in Imported.