The ROCKBROS 500ml Water Soft Flask is a lightweight, collapsible hydration bottle designed for outdoor athletes and daily trainers who value easy, clean drinking on the go.

• Capacity: 500 ml for compact, on-demand hydration.
• Material: Safe, flexible TPU with a soft, silicone mouthpiece; free from harmful substances.
• Collapsible Design: Folds flat for effortless storage when not in use, ideal for pockets, bags, or bike cages.
• Hydration Valve: Bite-valve system with a front groove for quick, spill-free drinking.
• Comfort & Safety: Soft mouthpiece that feels gentle on the lips; BPA-free and suitable for daily use.
• Compatibility: Fits standard 7.5 cm bottle cages and most bike mounts for easy cycling hydration.
• Portability: Lightweight and easy to carry; can be clipped on or carried hands-free during activities.
• Ideal Use: Perfect for cycling, running, hiking, and daily training sessions.

This bottle helps you stay hydrated on the move without extra bulk. The collapsible design lets you stash it in small spaces and expand it when you need a drink, while the bite-valve enables one-handed, spill-free sipping during workouts. The soft silicone mouthpiece delivers a comfortable, lip-friendly experience, making frequent sips feel natural on long rides or hikes. Its compatibility with standard bike cages means you can hydrate confidently on rides without detours, and the TPU construction provides a durable, bite-safe option for everyday outdoor use.