Highlights of the collar: ⭑ 360 rotatable carabiner with auto-lock for extra security ⭑ Soft to the touch BioThane® that looks like leather ⭑ Waterproof and stinkproof ⭑ Variety of color choices  Care Instruction: If the BioThane ever gets dirty, just rinse it with water and a little bit of soap. It'll look good as new again!!  Please keep in mind that the matte black hardware is nickel-plated and will wear off over time of use. Please also inspect the gear before each use for wear and tear that could cause safety issues. We offer a lifetime warranty if there's any hardware failure, but not normal wear and tear for the hardware.