Regal Jewel Brilliant Swarovski Cobalt Crystals and Aurora Borealis Crystals are artistically affixed to this collar to get the most sparkle and shine which is sure to get your pup lots of attention. There are many Crystals on each collar. Although they are securely affixed and they do not interfere with the ability to adjust the size of the collar, I would still consider this a dress up collar for special events. Please email me if you have any questions.