XS size: lace length 15CM, strap length 20CM, suitable for 15-20cm neck circumference
S size: Lace length 20CM, strap length 20CM, suitable for 20-25cm neck circumference
M size: lace length 25CM, strap length 20CM, suitable for 25-30cm neck circumference
L size: lace length 30CM, strap length 25CM, suitable for 30-35cm neck circumference
XL size: lace length 35CM, strap length 25CM, suitable for 35-40cm neck circumference