I got these just based on the reviews here and I like the look.  I could see how much they breathe with the zoomed in image so I got them.  I am competing in a 6.2 mile triathlon run portion and needed running shoes.  These will work more than great for it.  They are extremely comfortable, not too heavy, and provide awesome cushioning.  The front sole breathes very well because it has those microfiber mesh in it which allows air to come in through the entire shoe.  Some have it partially and some not at all.  My feet sweat a lot and this is going to help keep them dry and that's pretty much the reason I bought these on top of the good reviews.  The gel does add a little weight to the shoe.  Not too much weight though so it is still an awesome shoe.  I would trade the weight of the gel padding for sore feet anyday.