This is a pattern for a hot water bottle measuring 19cm x 26cm to the shoulder. This is knitted using the Entrelac technique and full instructions are included in the pattern. It is knitted using St Magnus DK 50%wool, 50% Angora and then felted.
I would recommend knitting and felting a swatch, especially if you substitute a different yarn.
Skills needed - picking up stitches, entrelac (description given in the pattern), felting.