Make My Belly Fit Zip-In Jacket Extender IMPORTANT before buying: Your jacket might require a Zip Adapter to use the BellyFit. The BellyFit is a zip-in softshell extender that expands the front of your own jacket during pregnancy. No need to buy a maternity jacket or borrow a XXXL. Feel good in your own jacket! While baby-carrying with a soft front-carrier or sling, the Bellyfit extends your jacket around you and your baby, for close comfort and warmth while outdoors. Wind, rain and snow resistant, ready for fall, winter and spring "Snaperoo" adjustable elastic that can be snapped anywhere on the BellyFit for a more custom fit