2 mm Round Elastic Cord, Elastic band, stretch cord - white, black - D – Angie Wood Creations
The Beadful Life @ BeadFX: Knotting Stretchy Cord for Bracelets: Surgeon's Knot
Amazon.com: Bead String Rubber Stretchy String Elastic String 0.5mm Crystal String DIY Jewelry Making Cord Bracelets Beading Thread 50m/Roll for Children Adult Women Men Girls - Black
Flat Elastic Crystal String, Elastic Beading Thread, for Stretch Bracelet Making, Dyed, White, 0.8mm, about 12.02 yards(11m)/roll