Summer Sun. Your crochet hook lights up with the interplay of stitches and lace details to create this lace cardigan pattern to knit with PHIL PERLE 5, 100% Egyptian mercerised cotton yarn, available in chalk or marsala. To complete this pattern, you will need: crochet hook size 2.5, 9 mm diameter buttons. This expert-level pattern includes instructions for the following sizes: 12 months, 18 months, 2 years, 4 years. Model no. 15/b from catalogue 224 Spring-Summer 23 – 26 children's models from 12 months to 4 years.