Silva Strive 5 Hydration Running Vest (5L) Conquer long miles and trail races with the Silva Strive 5 Running Vest—the ultimate lightweight, high-performance hydration pack designed in collaboration with ultra-runners. Whether you are training for your first marathon or tackling a technical ultra-trail, this 5-litre running vest offers the perfect balance of streamlined speed, bounce-free stability, and intuitive storage. As the upgraded successor to the bestselling Strive Light 5, this redesigned version is 24% lighter and boasts an improved, ergonomic fit that moves with your body, preventing friction and pressure points when you push your limits. Why Choose the Silva Strive 5? Weightless Breathability: Crafted from flexible ripstop nylon and paired with a 3D ventilation mesh, the vest actively wicks sweat away from your body and minimizes chafing over long distances. Bounce-Free Hydration & Storage: Features two front pockets with adjustable security straps perfectly sized for soft flasks, alongside a dedicated rear compartment for a hydration bladder. Intuitive On-the-Move Accessibility: No need to break your stride. Access energy gels, bars, or gloves via the spacious dual-entry mesh pockets, while your phone and keys stay safely tucked into two secure front zippered pockets. Versatile Pole Carry Options: Features four removable, adjustable straps to secure your running poles horizontally, vertically, or crossed. It is also fully compatible with the Silva Quiver pole carrier system. Night-Running Ready: Engineered for early morning and night trails, it includes a front headlamp attachment, a dedicated rear elastic battery pocket with shoulder cable routing, and prominent reflective detailing. See images for sizing. Full Technical Specifications & Features Feature Specification Packing Volume 5 Litres Material Premium Ripstop Nylon (87% Nylon, 13% Elastane), 3D Polyester Mesh Hydration Compatibility 2x Front Flask Pockets (straps included) + Rear Bladder Compartment Pole Attachment 4 Adjustable/Removable straps; compatible with Silva Quiver Safety Features Integrated emergency whistle & high-visibility reflective areas Sizing Weights XS (152g) | S (164g) | M (179g) | L (191g) Care Instructions Hand washable