The pdf pattern is 6 pages including pictures.

You can use any yarn you have with suitable needles and get different sizes.

The pattern gives rather an elastic piece so differences in cm’s are well tolerated between ages.

What I used:
• 100 gr orange yarn, I used weight 2
• 5 gr green yarn, I used weight 3

Needles
• Circular 40 cm (/16’’) size 4 mm /US 6 / UK 8
• Double pointed needles size 4 mm / US 6/ UK 8

You can always use different weight yarn with appropriate needles and calculate/ adjust the number of stitches yourself or by using knitting calculator on internet.

Patterns are written in standard American terms with step-by-step instructions and photos to help you.