Is your dog hard on regular collars, then the Cypton fabric collars may be just what you are looking for.
Crypton ® is a moisture, stain, odor, and bacteria resistant fabric and highly durable for abrasion resistance.
Most dirt and stains will rinse right off with just water.
There are 2 options in the Crypton fabrics, the regular patterned fabrics and the Crypton Suedes.
The suede fabrics are softer like velvet, great for sensitive necks.
To keep your collars looking fresh they should be rinsed off with fresh water
if used in salt water and washed if dirty or stained.