Watertight, airtight and non-deformable rigid resin backpack HPRC 3600. It is made of a TTX01 polypropylene plastic resin and has a micro-textured surface to reduce scratches. The interior can be personalized with a cubed foam or with the nylon bag and dividers. The backrest is ergonomic and has been made with an antibacterial foam and has also been designed to be thicker in critical areas such as the shoulders and lumbar zone to provide the precise level of support and protection. The shoulder straps are adjustable and have been made with a breathable material to allow more comfort and rapid evaporation of humidity. Four additional strong side loops have been printed in application for future accessories such as a jacket, helmet or a tripod .