SLIPPER 38/40 : Worked back and forth on needle from the toe towards the heel.
14 sts on needle size 5 mm / US 10.
Insert a marker in st 4 and a marker in st 11.
Work stockinette & the same time increase 1 st on each side of both markers x 4 times = 30 sts.
When your piece measures 24 cm, bind off.
Sew edge to edge to avoid a chunky seam.