See the fabric and supplies requirements chart among the pictures.
YOU WILL NEED:
Knit fabric with 20-60% stretch and medium to medium-heavy weight (approx. 200-340 gr/m2). I 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.
Elastic for both waistbands. Approx. 3 cm (1 1/8”) shorter than the child’s waist width. 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”). Size 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).
USEFUL TO HAVE:
Aqua glue marker
• Elastic threader (or safety pin)
• And of course: tape measure, fabric scissors, pins/clips iron, sewing machine with coordinating thread. Don’t forget a suitable needle in the sewing machine. For knit fabrics a stretch needle is usually recommended.