The safety of rescuers depends on their visibility and their easy individualization, even when there is a lack of illumination. Today, Spencer offers an ample line of reflective products for the safety of rescuers involved in searches, recoveries and rescue. These products have the feature of returning the light in the direction of its origin. Under the microscope, the materials show their composition of very highly reflective glass micro spheres, which have a uniform distribution. Therefore, they attain an elevated visibility.