Light to medium weight knit fabrics with 20% or more stretch such as cotton interlock, T-shirt jersey, and merino wool jersey. Less stable knits with a lot of stretch like rayon or bamboo should be used with caution as they may affect fit.

Supply list:
- Stretch sewing machine needle
- 1/4 yd of tricot or knit interfacing
- 1.5 yds 1 inch wide elastic
- Safety pin
- Hand sewing needle (optional)