Niu Shi 500ml Collapsible Soft Flask - Portable Eco-Friendly Hydration for Hiking & Trail Running

Stay hydrated without the unnecessary bulk. This 500ml soft water bottle is engineered specifically for high-intensity outdoor activities such as trail running, marathon training, and long-distance hiking. Unlike traditional rigid plastic bottles, this flexible flask contours to your body or gear and shrinks as you drink, making it the ultimate space-saving solution for your next adventure. Whether you are hitting the trails or navigating a mountain pass, this bottle provides lightweight, efficient hydration that moves with you.

Key Benefits

Ultra-Collapsible Design:** The soft-sided construction allows the bottle to fold down to a fraction of its size when empty, fitting effortlessly into small pockets, running vests, or waist packs.

Minimalist & Lightweight:** Designed for athletes who count every gram, this flask eliminates the weight of heavy plastic while also stopping the "sloshing" sound of water by compressing as the volume decreases.

Eco-Friendly Material:** Crafted from high-quality, BPA-free materials that are durable enough for rugged outdoor environments while remaining environmentally conscious and safe for daily use.

Efficient Bite Valve:** Features a high-flow silicone bite valve for quick, hands-free hydration on the move, ensuring you never have to break your stride to take a sip.

Ergonomic Fit:** The slim, flexible profile is specifically shaped to slide easily into the front chest pockets of most standard hydration vests and trail running packs.

Key Specs

Capacity:** 500ml (approximately 17 oz)

Material:** Flexible, eco-friendly soft TPU / food-grade composite

Product Type:** Collapsible Soft Flask

Recommended Use:** Trail running, hiking, cycling, and outdoor fitness

How to Use

1. Remove the cap and fill the flask with water or your preferred electrolyte beverage.

2. Secure the cap tightly to ensure a leak-proof seal before placing it in your pack.

3. To drink, gently bite the silicone valve and squeeze the bottle or sip directly.

4. As you consume the liquid, the bottle will naturally compress, preventing air buildup and minimizing liquid movement.

5. After your activity, rinse the flask thoroughly with clean water and allow it to air dry completely before folding it for storage.

Care & Safety

Cleaning:** Hand wash only with mild soap and warm water. Do not use a dishwasher as high heat may damage the seals.

Temperature Limits:** Designed for cool or room-temperature liquids; do not use with boiling water or extremely hot liquids.

Storage:** Store in a cool, dry place away from direct sunlight to maintain the integrity of the material.

Handling:** Avoid contact with sharp objects (knives, thorns, or carabiners) that could puncture the soft flask body.

Notes

"500ML户外运动可折叠便携环保徒步越野型软水壶"