When the total weight of your gear is critical, keep your options open for long-distance viewing with the help of this lightweight, pocket-sized piece. With the Vortex Doubler you can increase the magnification of any Vortex 32mm (or larger) binocular and take in high-power views more similar to what you'd see through a spotting scope. The Vortex Doubler easily attaches over the binocular eyecup as shown here.