1" Wide Biothane O-ring Collar | Marty Flint

1" wide biothane collar with a single dangling o-ring. Delightfully minimalist. Made by Marty Flint in Colorado. 

it is available in 3 sizes

• Small- 11 1/2 to 13 1/2 inch neck size  
• medium - 13 1/2 to 16 1/2 inch neck size 
• large - 151/2 to 17 1/4 inch neck size