Need a refresher? Who couldn't go for some rejuvenation? Revive your slouching bags with this 50 L (1.75 cubic feet) bag of beans and watch your favorite Comfort Research products come back to life. Although UltimaX beans do last 20% longer than the competition, it is a simple unfortunate fact of nature that beans do go flat with use over time. Refresh, rejuvenate, and enjoy!