Once again Max & Molly raises the bar for our pet's safety. We equip all our collars with a Smart ID Tag without additional charge for you. Have you ever lost your pet..even for 5 minutes?We believe that every collar should have an ID tag that you can register online and anyone can have access to all the necessary information to bring it back safely to the owner. Join our unique LOST PET PROTECTION PROGRAM. Simply activate your Smart ID online: id.max-molly.com Our Matrix line: Sporty yet elegant. Minimalistic yet extravagant. The Matrix line is our hybrid that does it all. And it does it so well. Here is what you need to know: * Extra visible reflective seems for night walks * Unique 3-layer sandwich construction * Comfortable and soft for both dog and master * Using anti-allergic neoprene material * Safety tested * Beautifully brushed metal parts Sizes: XS,S, M, L.