The color of our kraft labels blends with cardboard which makes them a handy solution to covering up existing markings on pre-used boxes. Reuse old boxes without the clutter of old shipping labels!Please note: These labels do not work well with our 100% Recycled Padded Mailers because of the consistency and cushioning of these mailers. We recommend UPS thermal labels for Padded Mailers. Labels may not work in older printers. Please order a sample to test before you buy a pack!