Love running free? The 450ml Aonijie Soft Flask lets you hydrate mid-stride – no stops, no sloshing. It collapses as you drink, becoming smaller, lighter, and your new favourite trail or road companion. Perfect for races, long runs, and even hikes. Grab yours now—adventure doesn’t wait.

Technical Features for Peak Performance

• High-Flow Bite Valve: Features a soft silicone bite valve that provides a high flow rate while being gentle on your teeth during shaky descents.
• Anti-Slosh Compression: The collapsible design reduces volume as you hydrate, preventing liquid from bouncing and distracting you from the trail.
• Antibacterial TPU Construction: Manufactured from 100% BPA and PVC-free Thermoplastic Polyurethane with an antibacterial finish for clean-tasting water every time.
• Wide-Mouth Opening: Allows for quick refills at aid stations and makes it easy to add ice cubes or electrolyte powders.
• Leak-Proof Security: Engineered with precision threading to ensure your vest stays dry, no matter how rugged the path gets.

Product Specifications

• Capacity: 450ml (15.2 fl oz)
• Material: BPA-Free & PVC-Free TPU
• Operating Temperature: 0°C – 40°C (32°F – 104°F)
• Compatibility: Optimised for Aonijie vests; fits most standard hydration packs and belts.
• Weight: Ultralight, flexible design for easy storage when empty.