These collars are ordered by length of the leather, and the fully opened internal circumference is usually about 2″ (5cm) less than the length of the leather, so make sure the length you choose is big enough to pass comfortably over your dog's head, as they do not open out flat. They are a type of choker collar, so are not recommended to leave on your dog when it's unsupervised - you may find the collar comes off over the head (& gets eaten!!) or there is a risk of strangling if the collar gets caught up on anything!
For most types of dog, the length you need to order will be the dog's neck measurement + 4"/10cm.
Rolled Leather Slip (Choker) Dog Collars
Fine rolled leather slip/choker collar for small dogs
Slim rolled leather slip/choker collar for small dogs
Rolled leather slip/choker collar for medium to large dogs
Rolled leather slip/choker collar for larger dogs