Dermatologically Approved by Skin Health Alliance. Even on heavy days, FlexFoam pads absorb 50% more than the leading ultra thin pad. Up to 10 Hours of Protection. Infinity FlexFoam has been dermatologically tested and verified as skin safe by the Skin Health Alliance.. The only pad made of FlexFoam not fluff, so it seamlessly conforms to your body. Always' driest top layer is breathable against your skin.