[Recycled cotton] It's time to stop overusing what our planet can offer! Re-cotton dog collars are made of recycled cotton to preserve natural resources. This is your conscious choice and a step towards sustainable consumption! [Suitable for all dogs] - Recycled cotton is extremely durable yet very soft and flexible. Gentle to the skin, this collar is suitable even for dogs with allergies and young puppies. And the reflective thread will improve your pup's visibility in darkness. [Easy to care for] Recycled cotton handles washing very well. Just put the dog collar in your washing machine and let it dry! Note: we suggest 30 mode. [Reliable plastic clasp] Made of sturdy plastic, this lightweight but durable clasp will safely keep the puppy collar on your dogs neck no matter what. The clasp is reinforced with a lock for improved reliability. [Smart ID Tag] Have greater peace of mind with modern WAUDOG puppy collars for your pets safety! It has a Smart ID Tag with a unique QR code and a free multifunctional app to make sure you WILL find your dog if it decides to experience more freedom.