S: Bandwidth 1.0cm scarf length 16cm / height 9cm collar adjustable range of about 20cm ~ 30cm

M: Bandwidth 1.5cm collar length 19cm / height 10cm collar adjustable range of about 26cm ~ 42cm

L number: bandwidth 2.0cm collar length 27cm / height 14cm collar adjustable range of about 32cm ~ 50cm

XL: Bandwidth 2.5cm The length of the scarf 30cm / height 16cm Adjustable collar about 37cm ~ 60cm

Apply: small medium and large dogs