[Raimund]

Zitat von meggele

Hydration has long been a challenge on aero bikes, with traditional bottle shapes corrupting the efficiencies of proper airfoil tubes. The 570 ml water bottle on the P4 smoothly integrates the down tube, seat tube and bottom bracket in a single aero form. The design reduces the drag typically associated with bottles mounted on the down tube, seat tube or behind the saddle and in fact, the P4 is faster with the bottle than without.

The bottle is the same for all frame sizes, is easy to grab, easy to drink from and refillable on the go. P4 owners have the option to replace the bottle with a utility box (handy for Dura Ace 7900 batteries, spare tubes, CO2 and tools) or a structural stiffener.

http://www.cervelo.com/bikes.aspx?bike=P42009

Wobei ich mich frage, beim wievielten Mal mir das Ding wohl aus der Hand fallen würde, wenn ich bei 40 km/h mit einer Hand versuche daraus zu trinken (ne neue Flasche kostet dann sicher 80 €...)

OK, ich kann ja immer noch die Shimano Batterie oder den Ersatzschlauch reintun...