Carbon filter –Ashtech-$29/pc, buy 2 get 1 free, $58 for 3.
* Active Carbon Portable filter bottle filter, double density and adsorption filtration of water
* 0.5 micron Precision filtration, patented technology direct drinking water filter design, new concept of healthy drinking water
* Suitable for outdoor portable filter Water bottle *
* No BPA products.
*Lightweight and flexible, food-grade materials, health and health
* Convenient Bonding, 3-second filter, simple and convenient
*FDA/NSF safe food grade material.
* Clean, healthy and good water can be drunk anytime, anywhere.
* About 6 months change filter (filter replacement depends on water quality and consumption)