Cobblestones. Potholes. Railroad crossings. Gravel roads. Those metal plates that cover holes during road construction. The reasons a bottle might pop out of its cage are legion, and the nipple on top will inevitably get chewed up when the bottle falls under the rear wheel and grinds into whatever obstacle caused it to jump ship. Replace that unfortunate article with CamelBak's Podium Cap Accessory, which freshens up the mouth-to-bidon interface with medical-grade, BPA-free silicone.