Here are some of the features that make our Biothane necklaces so special: Outstanding durability: Biothane is resistant to wear, humidity, weathering, and UV. It won't warp or fade, even after regular outdoor use. Our necklaces are designed to last, allowing you to enjoy many years of use without compromising on quality. Easy to clean: Biothane is waterproof and stain-resistant, which means you can easily clean up unwanted dirt, mud, and odors that may build up on your dog's collar. A simple wipe of a damp sponge and her necklace regains its original brilliance. Optimal comfort: Soft and soft to the touch, thus offering great comfort to your dog. Our collars are ergonomic, with rounded edges to avoid unpleasant irritations and rubbing on your pet's delicate skin. Quality Made in FRANCE