X-Small - Length: 16.25"  Width: 3.75" before folding Fit: Fits necks up to 8"

Small - Length: 20.5"  Width: 5.5" before folding Fit: Fits necks up to 13"

Medium - Length: 27.5"  Width: 8.75" before folding Fit: Fits necks up to 19"

Large - Length: 33.25"  Width: 10.25" before folding Fit: Fits necks up to 25"