What's included: You will receive 2 bite valve replacements and 4 water bottle filters, they allow you to replace your water bottle's bite valve, extend its life and drink healthier water PREMIUM MATERIALS: Our bite valve replacements are made of premium, reliable, which makes them perfectmouthpiece replacements for water bottles. (NOTE: These two water bottle are rinsed with water and dried before use, so it will be more convenient to use.) EASY TO USE: Simply remove the old bite valve from the water bottle, push the replacement new bite valve outside after cleaning. For better results, it is recommended to replace the water bottle filter every 2 months or after filtering 40 gallons of water LEAK PROOF: These bite valve replacements feature a one-piece self-sealing design to prevent leaks, and the exact size fits water bottles perfectly, making your water bottles more durable. With the water bottle filter, you can drink water with confidence WIDE APPLICATION: Compatible with 's collection of filtered water bottles, including 32oz, 20oz filter bottles and 36oz, 26oz plastic filter bottles Type: Sports Bottle Accessories Material: Plastic+silica gel colour: As shown Package Contents: 2 x mouthpieces 4 x filter elementss Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.