Latex-free and available in a variety of styles, each mask is designed for patient comfort with a soft, anatomical form Barbed fittings help prevent patient from disconnecting the mask while the elastic straps and adjustable nose clips secure it for a better fit Configurations available: Medium Concentration Mask, 7' (22m) tubing; High Concentration Mask, Reservoir Bag, 7' (22m) tubing; Non-Rebreather Mask, Reservoir Bag, Safety Vent, Check Valve, 7' (22m) tubing; Variable Select Mask, 6Color-Coded Diluters from 24%-50%, humidity hood, 7' (22m) tubing; Non-Breather Mask with Fits-All Tubing