4 packages of 20 per case - case price $146.40. Prevail Per-Fit has MaxSorb Gel technology which actively locks up moisture to help keep you feeling cleaner, fresher, and drier. Omni-Odor Guard to help prevent odors before they begin, 360° Breathable Zones that allow air to circulate around the entire underwear and help prevent heat and moisture build up, Skin Smart Fabric helps protect skin with Vitamin E, Aloe, and Chamomile, Comfort-Shape Plus with gentle elastics that shape to your body and cloth like outer fabric for a more natural fit.