One Size, Blue GVS offers a hard carry case to safely store the SPR451/SPR457/SPR449 or SPR456 masks. Since GVS Elipse respirators are low profile, GVS is now able to offer a low profile hard carry case to store the Elipse when it is not in use. A strong nylon loop in the back allows the case to be worn on a belt or can be attached to a clip.