Gel Flask? (Page 2)

I have the GU flask bike mount, but tended to drop my flask in races (butterfingers).  And, I never knew exactly how much I was taking in.  So, now I just use the packets (all 100 calories, so I can count my intake easily) taped to my top tube or in my bento, which are easier for me to hold onto. The empty packets can go in my pocket or back into the bento for post-race disposal.

However, the flask also works perfectly to bring powdered GU electrolyte brew to mix drinks on longer rides.  1 flask of powdered mix = 2 20oz bottles of brew.