Just when you thought you'd have to give up your search for a water bottle cage suited to your mountain biking needs, the Wayside Side Entry Cage steps in to save the day. This cage is constructed as a two-piece design that can release a water bottle from either the left or right side, depending on the setup of your frame, so you'll be able to go without the hydration pack for once. It's designed with the standard 65-milimeter center-to-center hold spacing with mounting bolts included. Top-notch retention means you'll never look down and find yourself with one less water bottle than you started with.