Medicool Diabetic Poucho Case For Insulin Travel Single Pen Back Neck Therapy Ultra powerful compressor for both humidification Otoscope Accessory Ultra powerful compressor for both humidification and High Flow High Pressure nebulization of viscous medications * Optimizes medication delivery by aerosolizing to a particle size of < 2 microns * Easy to read Pressure Gauge * 1 Year Limited Warranty * Molded rotary knob for comfortable resistance adjustments and quick stop operation 5 x 7 * The poucho case is easily activated with just water * Large enough for pens and bottles * Keeps insulin bottles or pens cool without refrigeration * Great for active travelers * Can be used and re activated a hundred times * Stays cool up to 4 days Supplies Not Included Single Pen 2