Aonijie 250ml & 500ml Soft Hydration Water Bottle Bags Soft Flask BPA Free for Use in Running / Hiking Hydration Vests
Features:
- Compresses as you drink to eliminate water sloshing 
- Updated soft bite valve with higher flow rate, easy on the teeth
-  Slim and lightweight, fills easily with wide mouth opening
- Durable Thermoplastic Polyurethane (TPU) construction
- BPA, PVC and Phthalate free, will not taint taste; Meets or exceeds FDA and EC regulation