To fit a standard hot water bottle, measuring approx 20cm wide and 35cm long.
To work tension square, use 3.75mm needles, cast on 35 sts. Work 48 rows stocking st. Cast off loosely. To achieve the desired effect, these items have been designed to be worked on smaller needles at a tighter tension than usually reccomended. Please check your tension carefully. If less sts use smaller needles, if more sts use bigger needles.