!! Read it all !! Our Mastiff handmade luxury leather dog collar , made from 2 layers of vegetable tanned leather dyed in Royal Blue with & additional layer of blue dyed leather on top & with black Nappa italian leather for the soft padding. It is 2.5 inches wide ( 6cm ) with a heavy duty buckle & Dring. A mastiff emblem is right on top of the collar . It is meant for big & strong dogs but it can be customized to any size & color. vegetable tanned leather Dyed by hand 5mm total thickness 2.5 ( 6cm ) inches wide Heavy duty buckle & D-ring Conchos & Studs Hand - sewn ( saddle stitched ) for maximum strength & security Soft Padding How to properly measure your dog’s neck & find what collar size you need. Have your dog in a relaxed position preferably standing up & place a measuring tape around the middle part of his/hers neck. Do not overtighten your measuring tape around the neck & leave space for 2 fingers to slide through . If you measure towards the head the collar will be too small & if you measure towards the lower parts of the neck the collar will be too big . If you do not have a measuring tape you can use a long piece of string instead & when you are finished place the piece of string next to a ruler to get the exact measurement. If for example your dog’s neck is at 25inches , this means the first hole of the collar will be at 25 inches ADD PHONE NUMBER TO ORDER NOTES American Bully Leather Dog Collar Blue Color With Black Soft Padding, Pitbull Amstaff Gear Cane Corso Essentials