From the Wild One Collection. Made with a super strong flex-poly strap, the all-weather collar is comfortable and functional. It's also dirt and odor-resistant. Flex poly-coated strap Zinc alloy buckle Coated carbon steel D-ring Hand wash Imported 

Materials
Flex poly coated webbing strap, zinc alloy buckle, coated carbon steel d-ring.

Specs

Extra Small straps are 1/2" wide. Small and medium straps are 3/4" wide. Large straps are 1" wide.

NECK: 15-18", STRAP WIDTH: 1"