Knit fabric with 20-60% stretch and medium to medium-heavy weight (approx. 200-340 gr/m2). We recommend for example college, french terry, cotton jersey, ponte di roma, knit jacquard, and other pants fabrics with stretch. If you’re sewing the pants with pant cuffs, make sure to use ribb fabric for the cuffs since they require very good stretch and recovery. Prewash all fabrics before cutting, knit fabrics often shrink with the first wash.

The fabric requirements above is an estimation for 150 cm (60”) wide fabrics, not preshrunk. We recommend you to add 20 cm (8”) extra if you’re purchasing new fabric for this project. You should also account for shrinkage, and add extra if you want to pattern match.

Elastic for both waistbands. Approx. 3 cm (1 1/8”) shorter than the child’s waist width. See length in chart below. Width depends on size:
Sizes 74-98: 2,5 cm (1”).
Sizes 104-122: 3 cm (1 1/8”).
Sizes 128-140: 3,5 cm (1 3/8”).
Sizes 146-152: 4 cm (1 5/8”).

Optional: light weight fusible interfacing, with or without stretch. If you’re sewing the pants with paperbag waist and using a fabrics with lots of drape, the interfacing will help stabilize the paperbag ruffle (see step 23).