Hardshell refers to a type of protective outer layer or casing that is rigid and durable. It is commonly used in various products, such as luggage, electronics, and outdoor gear, to provide enhanced protection against impacts, moisture, and environmental elements. Hardshell materials are often made from plastics or composites that can withstand wear and tear. In the context of outdoor equipment, hardshell jackets are designed to shield wearers from wind and rain while remaining breathable. These jackets are popular among hikers and climbers, as they offer a balance of protection and comfort in challenging weather conditions.