The PACE 8 trail running hydration vest has a completely new ergonomic design and size range that takes this vest to the next top level. It’s a lightweight vest with an outstanding personal individual fit delivered by the bounce free No Dancing Monkey™ Vest system and the elastic side panels. Design & Action Running marathons or grinding out all-day mountain epics when you need room for layers, gels, and a full hydration setup without feeling like you're hauling a backpack means you need a vest that locks down and disappears. The PACE 8L Trail Running Vest is a mid-capacity hydration vest built for trail runners and endurance athletes who need serious storage for nutrition, tools, and an extra jacket while keeping everything glued to your torso on technical terrain. USWE's patented No Dancing Monkey Vest harness uses elastic side panels that flex with your breathing while clamping the vest against your body for a bounce-free fit that stays put when you're flying downhill or scrambling over rocks. This lightweight hydration pack comes with two 500ml ultraflasks sitting in quick-access chest pockets so you can grab water without breaking stride. The 8L total capacity gives you enough space for a rain shell, first aid kit, phone, wallet, keys, and plenty of energy bars without turning into a cargo mule. Ventilated mesh straps and back panel keep air moving when you're sweating through long climbs in hot weather. Multiple pockets spread across the chest and back compartment let you organize your gear so you're not digging around mid-run. Tech & Specs NDM Vest harness: 4-point elastic suspension system that moves with your chest for zero bounce stability and unrestricted breathing during hard efforts 8L total volume: Enough room for layers, nutrition, trekking poles, and essentials without excess bulk Includes 2x 500ml ultraflasks: Front-mounted chest pockets for hands-free hydration access 258g weight (excluding flasks): Lightweight construction that won't slow you down on long trail runs Compatible with 2L hydration bladders: Swap in a bladder for ultra races or multi-stage events when you need more water capacity Fit & Kit Dial in your fit by adjusting the elastic side panels with the drawstring toggles until the vest sits snug against your torso without restricting your breathing. The NDM harness should wrap around your chest and shoulders with even tension across all four attachment points. Available in sizes XS through XL to fit both men and women. If you're running the included ultraflasks, rinse them with warm water after each use and let them air dry. For longer adventures, the rear compartment fits USWE's Elite Hydration Bladder or Shape Shift Hydration Bladder for extended water capacity on unsupported rides and remote trail races. FEATURES Zero bounce while running with No Dancing Monkey™ 4-point suspension vest Elastic side panels that expand along with the chest during physical exertion, allowing a constant tight and compliant fit. Use the vest as a running hydration pack, carrying up to two 500ml ultraflasks (included) Total capacity of 8L with a compartment on the back SPECIFICATIONS Pack Type: Running Vest Activity: Trail Running User: Unisex Weight: 258g (exclude ultra flasks) Dimensions: 45cm Length / 40cm Width / 5cm Depth Total Volume: 8L Hydration Capacity: 2.0L / 67 oz Hydration System: 2x 500ml Ultra flasks Made by HydraPak®