The Snuggle Me™ Infant is 28 x 18 x 13.5 and meant for babies up to 9 months who are not yet crawling. The center-sling™ is 20.5 x 7.
The Snuggle Me™ is uniquely designed to contour to baby's head and torso. At first, they WILL be able to fit all the way into the Snuggle Me™ center-sling™, but as they grow, they will fill out the center-sling™, and their legs will begin to drape over the bottom end of the lounger.
To transition sizes, they must be 9 months, crawling and 21" from the top of their head to the base of their bum.