TriSports has the GU flask that you were asking about
http://www.trisports.com/...nergy-gel-flask.html
Make Inside Out Sports your next online tri shop! http://www.insideoutsports.com/
http://www.trisports.com/...nergy-gel-flask.html
Make Inside Out Sports your next online tri shop! http://www.insideoutsports.com/