Twigo Silence Tags cover and protect existing engraved tags. Easy to use and personalises instantly: Simply write, boil, cover and wear. Self Attaches to collar. Eliminates jingling and jangling. Made from a durable, lightweight material can withstand the elements of mud, rain, moving water or any environment your pet may explore. Attaches easily & securely with no fussy split ring. Great for everyday use, travel, pet sitters, allergies and indoor collars.