A lifeguard's bag is an essential piece of equipment used to carry rescue and first aid supplies while on duty. Typically made from durable, waterproof materials, these bags are designed to withstand the rigors of beach or pool environments. They often include compartments for items such as life buoys, first aid kits, sunscreen, communication devices, and personal belongings. Lifeguard bags ensure that lifeguards have quick access to necessary tools to respond promptly to emergencies and maintain safety protocols.