Brilliant new design from the masters of aero at Cervelo. The Aerobottle 500 package features a durably molded bottle that securely clips into the proprietary cage mounted on the frame. The rectangular shape and black graphics are much akin to Lockheed Martin stealth technology, and works incredibly well in the field. Easy opportunity to improve aero and shave watts with a simple bottle swap. Consider the Aero 500 the ultimate upgrade for your TT or multi sport bike. Lightweight and svelte package tips the scales at a scant 128 grams.