Our KVP ID Bands are a nontoxic and nonhazardous synthetic paper product that offers colored bands that won't bleed. ID bands can help veterinary staff easily coordinate and organize pet's needs with trustworthy identification means. These bands are convenient to put on, and are made with a super strong adhesive. Features: -Strong, pressure-sensitive adhesive becomes more permanent with increased pressure -Non-toxic and made without hazardous chemicals -Water-resistant for long-lasting identification -Accommodates permanent marking pens, ball points and pencils -All product boxes come with one black Sharpie® Marker