(. Or amazon. ). https://www.amazon.com/Elastic-Spool-Stretchy-Elasticity-Waistband/dp/B07D6JMP52/ref=mp_s_a_1_1_sspa?keywords=1+elastic+band+for+sewing&qid=1580336063&sprefix=1”+elastic&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzR1FVR0FIMEFYMDlUJmVuY3J5cHRlZElkPUEwNDMxNzU1QklaTExURkFZVUFWJmVuY3J5cHRlZEFkSWQ9QTAyNjU3MjExTFE3RlVZWFQ2UllaJndpZGdldE5hbWU9c3BfcGhvbmVfc2VhcmNoX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=