The easiest diaper change,most comfortable sleep sack. The award winning Gunapod is the ONLY sleep sack with option to open from the bottom allowing easy diaper change without undressing baby with WONDERZiP. And it fits better. Patented design in super soft plush fleece is multi functional for baby’s optimal comfort, ensuring a better + safer sleep, easiest diaper changes, most generous fit + temp control zip to customize the cozy. Everyone gets a better night’s sleep