Review on Securely Attach Your Water Bottle 🚲 with the Minoura Saddle Water Bottle Cage Mount by Sean Spence

Holds up great on a 112 mile Ironman Texas bike with a gusset bag in front and two spare tubes attached to the back of each shoulder. The angle of the arms was comfortable for me and didn't let the bottles bang against my back (the more upright position also probably prevented bottles from being dropped on bumps, but looks like you can get them to turn the angle down a bit change if necessary). I could easily reach the bottles on the back to refill my main bottle between the aero bars and spray myself with ice cold water. According to aerodynamic studies, this arrangement behind the seat shouldn't compromise aerodynamics as much as a bottle in a traditional overhang. I can't speak for skydiving, although you have to train with rear tanks (and have long legs).