Silva Soft Flask | 500ml

Lightweight hydration doesn't get more packable than this. The SILVA Soft Flask delivers reliable water storage in a collapsible, space-saving design that fits seamlessly into any pack, pocket, or gear setup. Whether you're trail running, hiking, climbing, or commuting by bike, this flask adapts to your adventure without the bulk of rigid bottles. Built for performance-focused users who refuse to compromise on hydration capacity while maximizing pack efficiency, it's the answer for anyone tired of bulky water carriers limiting their mobility.

• Ultra-flexible silicone construction collapses when empty, reducing pack volume and wasted space during your journey
• Food-grade material ensures water stays fresh and clean, free from off-tastes or chemical leaching
• Durable seams and leak-resistant closure prevent spills and accidental water loss in your gear
• Wide mouth opening enables easy filling from any water source, stream, or fountain without funnels or adapters
• Available with optional integrated drinking straw for hands-free hydration while on the move or climbing
• Smooth, ergonomic shape fits naturally in hand or pack pocket, comfortable to grip even when wet
• Weighs just ounces, making it ideal for ultralight backpacking and weight-conscious athletes
• Compatible with most backpack hydration systems and external attachment points via carabiners
• Swedish-engineered design reflects decades of outdoor navigation expertise applied to practical gear

Choose between 250ml capacity for day hikes and minimal-load activities, or 500ml for longer expeditions and higher-demand situations. Both volumes are available in standard configuration or with integrated drinking straw option for convenient hands-free access during active pursuits.

This flask serves ultralight backpackers, trail runners, mountaineers, and bikepacking enthusiasts who demand reliability without unnecessary weight. It's equally at home on a summit push, a desert crossing, or tucked into a commuter's bag. If you've grown frustrated with rigid water bottles or excessive pack bulk, this collapsible flask represents a meaningful upgrade to your hydration system.

Questions about the Silva Soft Flask?

Reach out to our support team with any questions you might have!

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