Bra Strap Elastic - Black – Sewing Supply Depot

82% Nylon 18% Spandex Elastic  - Shiny satin center  - Suitable for garments such as lingerie, bras and more. 

bra-strap-holders

Demystifying making your own lingerie » BERNINA Blog

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Supply list for the Willowdale Bra

Bra Strap Elastic - 20mm (3/4) - 3 Colours – Riverside Fabrics

Size Details -- Package includes 1 roll black elastic shoulder strap, size is about 0.39 wide, 0.02 thick, total length 10.94 yards(10m); 1pc

NBEADS 10.94 Yards(10m) Bra Strap Elastic, 0.39 Flat Elastic Bra Strap Polyester Elastic Band Stretchable Adjustable Cord Ribbon for DIY Shoulder Bra

NBEADS 2 Rolls Flat Elastic Band, 0.39 White and Black Width Elastic Shoulder Strap Bra Strap Elastic Trim Elastic Cord Roll for DIY Shoulder Bra Clothes Sewing Project, 10.94 Yards/Roll

Knitted elastic available in black and white.

Soft Knit Elastic (By the Yard)

10 ways to use Wide Waistband Elastic - Bra-makers Supply the leading global source for bra making and corset making supplies

Bra Strap Elastic - Black – Sewing Supply Depot

10/20Meters Non-slip Elastic Band 10-20mm Silicone Stretch Tape Bra Strap Underwear Garment Sewing Supplies Material Accessories

How to adjust the back band of a bra

The Staple Bralette

The elastic has a shiny satin surface on one side and matte surface on the other. Great for lingerie.

Satin Elastic 1.5 wide (By the Yard)