Fully adjustable nylon dog collars with steel D-ring and heavy-duty side-release clip.

XS 10-14 inches. 0.75-inch width
S  12-17 inches. 1.0-inch width
M  14-24 inches. 1.25-inch width
L  17-27 inches. 1.5-inch width
XL 22-36 inches. 2.0-inch width