Available in both clip or martingale style in various widths.  1.5 inch wide are stain lined for comfort! 
5/8 inch wide
1 inch wide
1.5 inch wide 
2 inch wide
Length Size Chart (based on your dog's head/neck)• XS: 6-10 in• Small: 8-14 in• Medium: 12-18 in• Large: 16-22 in• XL: 20-26 in