FACTS Disposable masks are wasteful, difficult to use and uncomfortable. Fit testing is essential to working properly on a clean shaved face. Constant use of protection can help prevent lung disorders caused by over exposure to most airborne contaminates. Covering up can help reduce the chances of sun related burns, brown spots and possible skin cancer. 80% of skin cancer cases are on the face and neck, reported by the WHO (World Health Organization). Protection of any kind is only effective if used properly. Sun related fatigue causes a reduction in work performance and over exposure to UVB and UVA rays damages the skin. Performance of the DUS-T improves when mask is moistened by water or sweat. On hot days it is advisable to cover up. The DUS-T helps keep you cool while working in the heat because sweat builds up in the collar area, acting like a wet cloth. Only products that are labeled with the DUS-T FR (flame resistant) logo on the outside of the shirt are flame resistant. Please do not use your undershirt in areas that you might be harmed by flames or smoke. Tips Your DUS-T is made to fit closely to your body because it's designed for the abuse it's about to receive. On a heavy work day, on average the mask will be pulled out around 20 times, so we build them with this in mind. A tight fit will provide snug protection, preventing dirt and debris from entering the mask. Loose fitting garments are not advised while useing power tools as they might get caught up in the tooling during operation and cause serious harm to the user. If you require a looser fit, just stretch it for the desired fit. Before pulling up your mask or putting it back down into the collar, make sure your hands are clean and free of debris that might get in on the inside of the mask and jeopordise your protection. When using your DUS-T face piece, use your index finger and put it inside the mask nose piece after you pull the mask over your face and lift up, unfolding it and placing it on the bridge of your nose. The ear-loops will ensure the mask won't fall off your face while using the mask. When working in areas where additional protection is needed from dust and debris and you are without a filter, dampen the face piece with a little water. This will help block out additional unwanted materials from entering the mask. When protection is no longer needed, roll it down about three times to the inside, grab your T-shirt collar with your index finger and thumbs. With your other fingers and push the mask down into the collar pocket. This will keep the mask clean until needed again. If your DUS-T becomes to dirty on the job, stop using the mask and get another form of protection until you can properly clean your garment. The DUS-T is a shirt built to help decrease the amount of debris and irritants that are inhaled on a daily basis in most active peoples lives and the responsibility lies with the user to determine if additional protection is needed. Use your head when using any protection on the market and make sure you predetermine if you are using the right protection, if there is any doubt, stop what you are doing and either consult a professional or contact the manufacturer to make sure you are using proper protection.   DUS-T without a filter general farming, landscaping, gardening, general construction, domestic work, attics, basements, light drywall, general labor, colds, coughs, pollen, Non Toxic dust, allergies, outdoor crowded public events, airplanes or trains during operation, quick tasks that don't require certain protection that is specified by others.   Times when a filter is recommended. Concrete cutting, drywall sanding, rock crushing, mining, indoor areas where air flow is limited or a confined space, surfboard shaping, smoke or fume filled areas where air quality is questionable, while working with certain cleaning agents, when additional protection is obviously needed for longer durations in questionable areas. Please use your DUS-T responsibly. Places not recommended for the DUS-T Areas that require air purifying or oxygen- fed hoods and/or masks. Dealing with asbestos and other unidentified and or toxic materials. Where specified safety equipment is required to fulfill laws and regulations specific to a task or related need. Working with liquid contaminates that would require additional protection to shield against such materials. Areas known to contain biologically hazardous materials including but not limited to gases, liquids and or other harmful substances.