This zip one piece is super soft and comfortable and will make the most comfortable outfit for baby after they grow out of their gown/newborn set! Featuring a zipper that runs from the top of the outfit to the ankle. Our favorite part about this outfit is that the zipper is 2 way! Making for super easy diaper changes without having to remove the whole outfit. The fabric we used is super stretchy and breathable, made from bamboo viscose, wait until you feel how soft it is! These run very true to size and are meant to have a slim fitted look to them (check out the modeled photos in the listing! Models are wearing our 6m size). Consider sizing up if you want room to grow!