If you want to experiment with different widths of swimwear elastic, this starter kit is for you. 

Includes:
- 5 yds x 1/4" elastic for seams and straps
- 3 yds x 3/8" elastic used instead of 1/4" for added support in certain seams and/or straps
- 2 yds x 1" elastic for thick bands and/or straps
- Thickness: 1mm (standard)

This elastic is Fulflex brand, and you can feel the quality difference. It's ideal for sewing swimwear and activewear due to its superior stretch, strength, and ability to withstand chlorine and saltwater. It is industry-standard quality used for commercial manufacturing of swimwear, making it a great way to make your swimwear up to the quality you see in the shops.