Prevent damage to your shipping labels with the GoVets™ packing list envelopes. Made of durable plastic which protects the documents inside these labels are ideal for keeping out dirt and moisture and best for use in places such as warehouses packing and distribution centers. Simply peel off the paper backing and apply to any package. Its clear face ensures easy readability and back-loading feature prevents theft or tampering. Measurements 4-1/2"" l x 5-1/2"" w.