Bring your next ultra to the next level with a lightweight Mountain Vesta 6.0 Hydration Pack designed explicitly for ultra-running. Features waterproof pockets and efficient details dedicated to long miles. The Ultra Vesta uses the latest fully customisable vest-fit technology with ultra-durable Comfort CinchTM 3.0 and protective mesh panels that prevent chafing over many miles. A narrower cut in the shoulder straps and back offers a tailored fit for smaller frames.