This is a fully Personalized Dog Collar from Hot Dog Collars, made in the US with some global materials. SIZING: This dog collar is a martingale, aka slip, collar. It is meant to fit sligthly loose and then tighten when the leash is pulled. We recommend sizing up about 2 inches from your dogs neck size or from size they would normally wear with a standard quick release collar. Sizing is given as a range of neck lengths. Measure your dogs neck size or its current collar length (not including buckles) to obtain correct sizing. Small (12" to 16" long x 3/4" wide). Medium 1" (14" to 20" long x 1" wide). Large (18" to 28" long x 1"wide). To determine the size your dog needs, the easiest way is to measure their current collar. If you think you've seen personalized dog collars before, you haven't seen these! So much better than an embroidered dog collar, give it a shot and we're confident you will agree. No rough edges, no embroidered threads to fray or break, no problem going in the wash, just smooth, hi-def customization on a soft wearable dog collar.Hot Dog Collars is the place to personalize your pet. In business for over 15 years, we know pets and we know personalization. Most importantly, we know and love our customers. If something goes wrong (rare, but it happens) you can count on us to make it right!