Rash Guard Slip Shorts. I think these are exactly what I’ve been looking for! I wear a skirt…, September 05, 2018 at 07:12PM 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 Google+ (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)