The only reason this didn't get 5 stars is because I wish they made different lengths.  That being said, here we go...For those of you, like me, who think the lace at the top is just lace, it is not.  I was skeptical of these because I thought they had a lace only waistband.  That is not so.  They are basically the fusion shortlettes with lace sewn at the top of them to make them more prettiful (yes, I know that's not a word).  I have yet to wear these in the midst of the summer, only on 88 degree Fahrenheit days.  I also haven't done a massive amount of walking in these.  Thus far, the shortlettes do as they should and prevent thigh chafing.  I haven't been overly hot wearing them.  I wear my normal undies with these, but that's just who I am and my personal preference.  They do tend to crawl up the center of my legs a bit, but it hasn't been nuisance in any way.  The waist doesn't roll like my cotton leggings do.  The material sort of reminds me of underarmour material.  So they feel much cooler than a pair of bike shorts would.  I haven't owned them very long, so I am not sure how they will hold up in the laundry, but even if they get me through the summer without the chafed thunder and lighting, I'd buy more for next summer.