Sundstrom mining kit l/xl, 1 each, h05-6321l the sr 100 silicone half mask air purifying respirator is intended for use when maximum safety and breathing comfort are required. The heat-treated silicone material is fda approved offering a safe and comfortable fit that molds to the shape of your face. Extremely low breathing resistance makes this mask optimal for low to strenuous work activates. One mining safety kit includes everything you need. features: sr 100 l/xl half mask respirator (1) p100 particulate filter (10) sr 221 prefilters prefilter holder sr 5226 cleaning wipes sr 368 id tag and storage box