You will need stitch markers.

Not noted, but you will need a length of elastic that fits comfortably around your waist - approximately 1” (2.5 cm) wide - it should fit within the space, and not roll because it is too wide.

Finished length: 19( 19.75, 20.5, 21.25, 22, 22.75, 23.25, 23.5, 24)“ 48( 50, 52, 54, 56, 58, 59, 60, 61) cm

Yarn used:
Rowan Handknit Cotton
Shade 370 Forest - 6(8, 9, 10, 11, 13, 14, 15, 16) balls