A garment sewing pro explains and divides elastic choices she finds most useful into three categories: waistband, specialty, and lingerie.
Your essential sewing machine thread guide - Gathered
Poly covered polyester thread provide a smooth seam and tends to be more elastic and prevent thread breakage. Great for outerwear, leather garments,
WAWAK Perform-X Poly Wrapped Poly Core Thread - Tex 24 - 6,000 yds. - Black
Your essential sewing machine thread guide - Gathered
How to choose the best thread for sewing - SARTOR BOHEMIA
Elastic For Every Project - Threads
A Guide to Indispensable Elastics for Garment Sewing - Threads
Gutermann MaraFlex 120 Stretch Thread - Tex 38 - 1,640 yds
21 Types of Sewing Thread & When to Use Them (+ PDF Chart)
Clear Elastic Thread Stretchy Elastic for Bracelet Making