SWIFTER 2x Soft Flask 500ml collapsible running bottle

This soft flask pair from SWIFTER offers two collapsible 500 ml bottles designed for runners and hikers who want lightweight, spill-free hydration on the move. They weigh only 35 g each and feature a high-flow bite valve that seals after every sip, helping to keep your hands and pockets dry while you cover distance.

Key Points

Each pack includes two 500 ml soft flasks that fold down as you drink to reduce sloshing and improve stability during running or fast hiking. The high-flow bite valve is designed to close automatically after each drink, which helps prevent leaks and accidental spills while you concentrate on your pace. Made from food-grade TPU, these bottles are free from BPA and PVC, offering a safer option for repeated use on long outings. They are lightweight and compact, so they fit comfortably in a hand, running vest or backpack pocket. Note that, according to the manufacturer, the flask colour may change over time depending on water pH, but this does not affect performance.

Technical Specifications

• Name: SWIFTER 2x Soft Flask 500ml
• Capacity: 500 ml per flask
• Weight: 35 g each
• Material: Food-grade TPU, BPA-free and PVC-free
• Cleaning: Dishwasher safe
• Valve: High-flow bite valve, self-sealing after sip

Usage Recommendations

For running or race use, carry one flask in your hand or stash both in a running vest to alternate between sips and avoid excessive bounce. Because the flasks collapse as you drink, they sit more stably against your hand or pack than rigid bottles, which reduces movement and distraction during activity. Rinse with warm water after use and run a quick dishwasher cycle occasionally for a more thorough clean. Consider using filtered water if you are concerned about minor colour changes over time, as this can reduce pH-related tinting.

Positive Aspects

The lightweight construction makes long runs and multi-hour hikes less burdensome, while the bite valve and collapsing design keep hydration straightforward and tidy. The material and leakproof performance suit those who prefer reusable gear with fewer rigid parts. A small limitation to bear in mind is that flexible bottles require careful storage when filled to avoid unwanted compression, and some users may prefer a rigid spout if they want to drink hands-free rather than bite and sip during very intense efforts. 🏃♂️🥾💧