A container specifically designed to hold medical supplies but currently lacking those supplies defines the subject. These containers come in various sizes and materials, from soft-sided pouches to hard-shell cases. An example would be a nylon bag with multiple compartments intended for bandages, antiseptic wipes, and pain relievers, but currently holding nothing.
The absence of contents allows for complete customization based on individual needs and anticipated situations. This adaptability is especially beneficial for tailoring a kit to specific activities or environments, such as hiking, camping, or workplace settings. Historically, individuals or organizations assembled medical kits from scratch, providing full control over the included items. The benefit lies in having the freedom to choose exactly what is necessary, avoiding redundancy and ensuring the inclusion of items most relevant to potential emergencies.