Polar Tech Pressure sensitive permanent adhesive label. Legend "PERISHABLE REFRIGERATE UPON ARRIVAL OPEN IMMEDIATELY". This stock shipping, caution and handling label draws the attention to your valued shipment. Featuring, a permanent adhesive for an aggressive adhesion to corrugated boxes, stretch film and mailer. Caution and handling labels help packages arrive safely. Measures 3" length by 2" width. 500 Labels per roll - 3" core. Available in black on yellow color.