An overpack label, as defined in the IATA Dangerous Goods Regulations is an enclosure used by a single shipper to contain one or more packages and to form one handling unit for convenience of handling and stowage.
All GHS labels have a red border in the shape of a diamond to make them distinct and unmissable. These labels, amongst others, are usually accompanied by other labels to make sure the handler is fully aware of what they’re handling.
Labels are a part of everyday life whether you realise it or not. When you take a shower, cook your food or even feed your pets, labels are surrounding you.