All collars will be adjustable with contoured side release buckles and extra comfy with strong nylon webbing. Triple stitch at all of the stress points to make sure this collar is strong for your pooch. Please select size according to each collar. If you want a larger size please email me and let me know. I will be happy to work with you. These collars are very durable and can last for years, however it is very important you periodically check your dog's collar for signs of wear. Taking care of your collar: You can hand wash or place in a garment bag and wash with mild detergent in gentle cycle. Lay flat to dry. NOTE: Your Collar, Leash or Fob will be cut from the same fabric as shown in the photos. Because the fabric's pattern varies, the pattern on your collar, leash or fob may be a bit different than what is shown.