Up to 3/4 yard of stretchy knit fabric.
—For swimsuit: 4-way stretch swimsuit fabric (Usually a Polyamide/Nylon/Polyester and Spandex/Elastane blend).
1/2" wide elastic (waistband).
1/4" wide elastic (legs).
—If making swim bottoms, you will need all elastics to be swimsuit elastic.
Sewing machine or serger.
Stretch-needle for your sewing machine.
