Silva Strive Mountain Pack 17+3 - Expandable Fast-Packing Vest

Pack for the long haul without the punishing bounce. The Silva Strive Mountain Pack 17+3L is the ultimate partner for self-supported running adventures, mountain marathons, and fastpacking the rugged coastlines of Atlantic Canada. Featuring the unique Silva Embrace System, this pack is engineered to hug your torso, distributing heavier loads evenly across your shoulders, back, and waist to prevent chafing during multi-hour efforts. With an adaptable 17 to 20-liter capacity and a weatherproof roll-top closure, it keeps your essential gear dry and secure whether you are navigating a humid summer single-track or pushing through an unexpected Maritime downpour.

• Silva Embrace System: A double-layered carrying system with stretchy side wings that creates a secure, body-hugging fit to eliminate bounce, even when fully loaded.
• Weatherproof Roll-Top: Expandable 17+3 liter volume features a weather-resistant top closure and a reinforced bottom to protect your extra layers and electronics from trail grit and rain.
• On-the-Fly Storage: Designed so you never have to stop—features two chest pockets for soft flasks, two zippered waist pockets for nutrition, and two side mesh pockets for quick-stashing gloves or a shell.
• Hydration & Headlamp Ready: Purpose-built for serious endurance with an internal hydration reservoir hanger, hose routing loops, and a dedicated battery pouch with cable outlets for nighttime navigation.
• Smart Trail Details: Includes an integrated emergency whistle, high-visibility reflective hits, and a detachable back panel that pulls out to become an insulated seat pad during breaks.
• Breathable Comfort: Constructed with highly breathable mesh fabric across the back and straps to optimize ventilation and sweat transportation during high-intensity efforts.

Best For

• The Effort: Self-supported trail running, fast-packing, and ambitious day hikes.
• The Goal: Carrying significant gear (layers, food, safety kit) with the stability and access of a running vest.
• The Conditions: Variable Atlantic weather, technical coastal trails, and dawn-to-dusk adventures.

Technical Specifications

• Total Volume: 20L (17L base + 3L roll-top expansion)
• Weight: XS/S: 462g | M/L: 485g
• Material: 70D Ripstop / 210D Nylon
• Hydration: Reservoir compatible (hanger/routing included)
• Sizing: Available in XS/S and M/L for a precision fit