Klang Stock~Baby Stroller 4in1 Donna Carseat Stroller Outdoor Folding No Installation Required Instant Switching Baby Car Seat Travel Stroller

Because it functions as a car seat, the sides of the seat are higher than a regular stroller, providing side protection. This makes the space feel relatively smaller, so it's not suitable for older babies. It's recommended for infants under 2 weeks old.While we generally believe that the flatter the position, the better, strollers are primarily for travel. Infants' heads have a relatively high proportion of weight, and if they lie too flat while the stroller is in motion, their heads will wobble from side to side, which is not good for their cervical and spinal spine. Therefore, internationally available strollers do not lie completely flat; the design angle is similar to an adult holding a baby.Please consider carefully before purchasing if you mind that the stroller cannot lie flat or has limited space!