Description The bite valve used for a long time may accumulate invisible bacteria or impurities that are difficult to clean. The simplest solution is to replace the old bite valve. Our product is an excellent choice for maintaining hygiene. Made of silicone material, it is durable and easy to replace. Features - Color: White - Material: Silicone - Size: 4.00 x 3.00 x 3.00 cm / 1.57 x 1.18 x 1.18 in - Valve replacements for filter water bottles provide the same performance as the original - Made of silicone material, durable and practical for use, easy to install and remove - Ideal replacement for water bottle mouthpieces, suitable for replacing broken or dirty ones - Designed to replace mouthpiece valves every 3–6 months to maintain clean and hygienic drinking conditions - Food-grade silicone, safe and BPA-free; can be sterilized using steam or boiling water Package list: 4 x Water bottle mouthpiece replacement parts