Yarn is thin, more like sport weight, but it’s nice to knit with

CO 153

3 garters sts on each side not sufficient to prevent curling

Added crochet camel stitch border to deal with the curl: 4.5 mm hook, HDC evenly around with 3 HDCs each corner. Then HDC into third loop (camel stitch) each row, 3 camel sts in middle HDC each corner. Final row SC into third loop to tighten final round of V’s.