Smear guard. Contents: 2 fluorescent yellow highlighters. Resists smearing of many pen and marker inks (Based on consumer surveys. Let ink dry before highlighting). Quick-drying, odorless, and AP certified nontoxic ink formula. Uncap what's inside. Guarantee: If your products does not perform properly, please return for replacement. In the United States, return to In the United States, return to: Newell Rubbermaid Office products, 2707 Butterfield Road, Oak Brook, Illinois 60523. Attn: Consumer affairs Att.: Service aux consommateurs. In Canada, return to: Newell Rubbermaid Office Produces Canada, 586 Argus Road, Oakville, ON Canada L6J 3J3. Attn: Consumer affairs att.: Service aux consommateurs. ACMI AP: Art & Creative Materials Institute certified. Conforms to ASTM D 4236. www.sharpie.com. Assembled in USA.