I keep my Gu in my running bra :) Here's proof... works well. No need to worry about pins, nothing flopping around at your waste band, no chafing on your side (although there has been chafing when only wearing one bra, two bras are necessary to prevent this), I never forget where it is, and it keeps it warm.
I should patent this idea and become a millionaire. This idea also works for triathlons. Why reach around to your back, when you can have it available up front :)
.JPG)