The GEARsafe is Designed to assist you in complying with NFPA 1851
9.1 All Ensembles and Ensemble Elements
9.1.1* Ensembles or ensemble elements shall not be stored in direct sunlight or exposed to direct sunlight while not being worn. Commentary Direct sunlight has been shown to negatively impact the protective properties of the PPE.
9.1.2* Ensembles and ensemble elements shall be clean and dry before storage.
This seems more obvious that not, but if PPE is stored dirty or wet it too can have a negative impact on the protective properties of the PPE.
9.1.3 Ensemble and ensemble elements shall not be stored in airtight containers unless they are new and unissued.
Ensemble elements must not be stored in air-tight containers unless they are new and unissued. Do not store ensembles or ensemble elements in temperatures below -25°F or above 180°F. Ensembles and ensemble elements must not be stored or transported in compartments or trunks with sharp objects, tools, or other equipment that could damage them. If the elements must be transported in such environments, they should be placed in a protective case or bag to prevent damage.
Soiled ensemble elements must not be stored in living quarters or transported in the passenger compartment of personal vehicles. If ensembles must be transported or stored in this manner, they should be placed in a protective case or bag to prevent cross contamination. Do not store ensemble elements where they could come in contact with contaminants such as oils, solvents, acids, or alkalis. Proximity firefighting coats and trousers must be stored by hanging to limit the damage caused by creasing or folding. Store the ensembles in clean, dry, and well-ventilated areas."
NVFC, Understanding & Implementing Standards NFPA 1851 - Page 21