just to let everyone know, I am currently experimenting a new idea to prevent the sides of Underjams from ripping out over long periods of time. Currently, I have been wearing one for 5 hours with only scant traces of ripping...one thing that would help me out from others is...where does it start to rip? For me, the sides weaken and rip in front of the seam down the middle of the side. The stretchy material toward the back seems to be used less and have less stress. Feedback please!