Enhancement gel for him and stimulation arousal gel for her in one bottle bottle. Genius! We love the people at M.D. Science lab (aka: Swiss Navy), and products like this is just one of the many reasons why. Each side contains 25ml with its own color-coded push button. When these two gels mingle, well lets just ... it's good STUFF! Excitement for both partners. Approximately .9 fluid ounces.