COLLAR NOT INCLUDED Our pet bandanas make it easy for you to show off your pet's personality. They are 'over the collar' pet bandanas. All you have to do is slide your collar through the pocket and attach the buckle. Our pet bandanas are safe and secure and that guarantees that their new neck accessory won't fall off of them. You are sure to have fun with this inexpensive pet accessory. They are made to cover half to two thirds of your dogs collar. To find the right size, measure around your dogs neck or lay your pets collar flat to measure it's length. You may considering sizing up if your pet has a thick coat. Our bandanas are made to minimize gathering or bunching up of the fabric and designed to lay flat against your pet's collar. X Small - 7 1/4" across the top and 5" from the top to the point. Opening is 1 1/2" Small - 9 1/2" across the top and 6" from the top to the point. Opening is 1 3/4" Medium - 10 1/2" across the top and 7 1/2" from the top to the point. Opening is 2" Large - 13" across the top and 8 1/2" from the top to the point. Opening is 2" REMEMBER: As responsible pet parents, you should always watch your pet when they are wearing accessories as some can be a choking hazard or might get ruined during rough playtime. Please always keep your pet's comfort and safety in mind. NOTE: This is a handmade item. No two bandanas are exactly the same. There may be slight variations in size and pattern. Placement of the pattern may vary.