These pet scarves come in small, med, large, and x-large
small fits up to 20 pounds
med fits 20-30 pounds
large fits 30-50
xl fits 50-90
scarf size
Small - 6.41 x 3.54
Medium 7.59 x 4.33
Large 11.88 x 5.51
X-Large 12.20 x 6.30
These just slide on to your pets collar