I don't know my friend and I have the same ones and like as soon as we step in the water it goes right threw... no visible holes or anything. Iv have always used H20 (2 different pairs) and have had the same prob. I'm buying new ones at kcoast 2marow hopefully I won't have the same experience.
dude the water is supposed to go through. Remember, they're H2Odyssey - unless you got drylock, or dryboots, your feet are supposed to get wet, and hopefully retain the heat. Does for me. I got them for their simpleness, and no straps or extra crap on them, like split toe, just so I can wear fins.