Wholesale 500ml Soft Running Flask for Hydration Pack

Anti-sloshing: easily carry your water during your trails, races, or hikes. The soft TPU flask expels air when you drink to prevent sloshing and water noise. Leak-proof: thanks to its bite safety valve, water does not spill. Space-saving: less bulky than round nozzles, the pinched profile offers extra comfort. The bottle folds easily. Recycled plastic: made from recycled TPU. A 500ml flask made from recycled materials, with a bite safety valve, ultra-practical, comfortable, and easy to clean, compatible with most hydration packs.