Rash Guard Slip Shorts. I think these are exactly what I’ve been looking for! I wear a skirt…, August 02, 2017 at 03:32PM Rash Guard Slip Shorts. I think these are exactly what I’ve been looking for! I wear a skirt everyday to work and have tried several products to avoid the dreaded thigh chafe! I tried powders, gels, bandelettes, and the jockey shorts but found that most of them either didn’t last, rolled up, or fell down. So I finally decided to give the undersummers a try. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)