PLEASE MEASURE YOUR DOGS NECK WITH A PAPER OR FABRIC TAPE MEASURE TO ENSURE APPROPRIATE SIZING and message us with any questions! WE do not accept returns or exchanges so it is very important for you to ensure you have the proper sizing Gorgeous hand tooled adjustable dog collar Genuine Leather Available in Sizes XS 8"to 12" at hole marks (1st hole is 12", last hole is 8") Small 10-14"at hole marks (1st hole is 14", last hole is 10") Medium 14"-18" at hole marks (1st hole is 18", last hole is 14") Large 18"-22" at hole marks (1st hole is 22", last hole is 18") XL 22"-26" at hole marks (1st hole is 26", last hole is 22") Each collar is 1 3/4” wide at widest point except the xsmall is 1" at the widest point Padded top underside Traditional buckle and hardware To ensure proper function of this item We have checked all the hardware, however it will require regular checks from you to ensure the hardware is held together properly. To do this you can use a flat head screw driver or a butter knife (don't let momma catch you) and tighten the screw heads on the reverse side of the collar at least once per week, more often if the collar stays on the dog 24/7 Should any of the screws fall out they are easily replaceable and can be found on Amazon, or at your local craft, Hardware, or Tack Shop Check out our other dog collars!