Using this dog collar is a breeze. First, adjust the nylon strap to fit your dog's neck according to the sizing guide. Just slide the buckle to get the perfect fit. When taking your dog out, clip the collar onto your dog's neck using the sturdy gunmetal - colored hardware. For a coordinated look, pair it with the matching dog harness mini backpack. As for maintenance, you can spot - clean the collar with a mild detergent and a soft cloth. Avoid submerging it in water for too long as it may damage the print. Also, keep it away from sharp objects to prevent scratches on the hardware and tears in the nylon. Remember, this is an officially licensed product, so handle it with care to enjoy it for a long time.