How to knit slippers to any size By Katerina Mushyn Size: 35-36 (37-38, 39-40) Foot length: 22 (23, 24) cm. Materials: Nako Superlambs Specisl yarn (semi-wool, 100 g / 200 m), needles 4.0 mm. Knitting tension: 19 stitches= 10 cm wide. Cast on 63 (67, 71