The Rudy fabric is a classic, black and white checkerboard, made a bit more interesting with squares that look hand drawn. 

Martingale collars are where it all began for Mutthead. Also known as greyhound collars, instead of a buckle they have an extra loop--creating a gentle tightening effect. This is necessary for any dogs (like greyhounds, or our poorly shaped mutt, Nene) who are wider at their neck than their head. Is you dog able to back out of its collar? This would solve the problem. Martingales are also useful on super fluffy dogs who would prefer to wear their collars a little looser to help prevent hair matting.

Shown in this picture is a 1” wide, size large collar. They are available in two sizes, and two widths. Because martingales do not have a buckle, when measuring your dog, please make sure the collar is large enough to slip over their head.

Medium, 1" wide: fits neck sizes 14"-17"
Medium, 1.5" wide: fits neck sizes 14"-17"
Large, 1" wide: fits neck sizes 17"-23"
Large, 1.5" wide: fits neck sizes 17"-23"