Size:

XS code: lace length 15CM, strap length 20CM, suitable for 15-20cm neck circumference

S code: Lace length 20CM, strap length 20CM, suitable for 20-25cm neck circumference

M code: lace length 25CM, strap length 20CM, suitable for 25-30cm neck circumference

L code: lace length 30CM, strap length 20CM, suitable for 30-35cm neck circumference

XL code: lace length 35CM, strap length 20CM, suitable for 35-40cm neck circumference