Tea Cosy 30. January 2020 This lovely tea cosy helps keep your tea hot during the cold months of the year. â€It is both practical and cosy,â€ believes Clara. Sækja skjal Material List Anna and Claraâ€™s woollen yarn: 3 grey balls (150 g) + 1 purple ball (50 g) Circular knitting needle, size 6 mm., length 80 cm. Double-pointed knitting needles, size 6 mm. Crochet hook, size 6 mm.