Double-walled essentially means two-layer construction. Jars are produced in two separate parts that are mechanically assembled. There is an inner container and an outer shell – a jar within a jar.
Usually made of plastic and is a high-quality packaging option mainly used in the cosmetic industry. They usually have a glossy finish and wide mouth – a design that makes them ideal for personal care cream or powder products.
A double-walled jar also allows for a smaller capacity to stand out among higher capacity counterparts. Since the jar is made of two layers of plastic, it is generally made in white to give it a solid look.