Polycarbonate (PC) is a moulded thermoplastic and is a very popular material for hardside luggage. It is lighter than aluminium but still very durable and offers more style choices in colours and patterns. Polycarbonate is extremely resistant to impact. Upon impact, the material flexes to absorb the impact and then flexes back to its original shape, making polycarbonate luggage extremely resilient to rough handling.Polypropylene (PP) is also a type of thermoplastic polymer and the lightest of all the thermoplastic products. It is also very resilient. Polypropylene is a great choice for those travellers who want good protection in as lightweight a form as possible.ABS (acrylonitrile-butadiene-styrene) is a common thermoplastic. ABS is lighter than polycarbonate but not as durable. It is also the cheapest hard material, meaning it is popular in the less expensive hardside luggage ranges. It is frequently added to other stronger luggage materials like polycarbonate. The combined material is more durable than ABS on its own, but also lighter and cheaper than polycarbonate on its own.