This pattern was created using stashed left over balls of yarn.
The main size is small/medium but with instructions for calculating your size.
The gauge of the Sandnes firitidsgarn is 14 x 23, cascade 220 16 x 33, which entails some increases ipadter the changeover. These increases are stated as the instructions.
The bigger your size, the more yard you will need.
It is possible to use any thick yarn for this, as you have to calculate your size, and as soon as you have your size measured and the gauge of the yarn you can follow the pattern.
The pattern does require a bit of math.