Adjustable LED collar lightweight, suitable for small - large dogs of different breeds
XS: 9 inches - 13.7 inches / 23 - 35 cm, width: 2.5 cm.
S: 11 - 15.7 inches / 28 - 40 cm, width: 2.5 cm.
M: 15 - 19.7 inches / 38 - 50 cm, width: 2.5 cm.
L: 19 - 23.6 inches / 48 - 60 cm, width: 2.5 cm.
XL: 21.6 - 27.5 inches / 55 - 70 cm, width: 2.5 cm.