Collar not included Slip Over the Collar Dog Bandanas are perfect for your dog, simply slip the dog collar through the casing at the top & your dog can be dressed for any occasion. The advantage of a Slip Over the Collar Dog Bandana is the ease of putting it on your & the comfort for your dog. No need to tie a bandana & possibly get it too tight on your dog or have the problem of it coming off. Just slip the dog collar your dog is currently wearing through the casing sewn into the top of the bandana. Our Dog Bandana Sizes: For a proper fit, measure the width of clasp on collar. This is the thickest part of collar & the casing at the top of the bandana should be large enough to accommodate. Large is approx. 10" across with a casing of 2 ½ " Medium is approx 7 ½ " across with a casing of 1 ½ " Small is approx 6" across with a casing of about 1 ½" Extra Small is approx. 5" across with a casing of about 1-1/4" Note: The photos show a medium bandana. The cut of fabric pattern varies as to size of bandana & placement of pattern on fabric, so your bandana may look slightly different, but will be from this Los Angeles Rams fabric. No-Tie, Slip Over Collar Dog Bandana, Los Angeles Rams Fabric | Collar Not Included