Advanced Compatibility: These filters are ideal compatible withPlastic Water Bottles (26oz or 36oz) and Stainless Steel Water Bottles (20oz or 32oz). Note: These are not suitable compatible withbottles without straws or the soft squeeze sport water bottle models. Enhanced Filtration Technology: Featuring a top-grade coconut shell carbon block, these filters adeptly minimize contaminants including chlorine, odors, sand, and sediment, ensuring your water is clean and fresh-tasting every time. Optimized Water Taste: Employing a high-density filtration media and an innovative design, this filter offers an expanded filtration area, resulting in improved water quality and taste - enjoy pure, refreshing water with every sip. Ensured Safety with Food-Grade Silicone: Constructed from superior, -free food-grade silicone, our mouthpieces offer a safe, reliable option compatible withwater bottle. Enjoy a pure taste without compromising on quality with these essential accessories. Precise Fit compatible withBottles: Specifically crafted to fit water bottle models, including the 32 oz and 20 oz stainless steel and the 36 oz and 26 oz plastic options. compatibility by checking your bottle's model before purchase. Maintain Optimal Hydration Practices: compatible withresults and to maintain hygiene, substitute your compatible withbottle mouthpiece every three months. Regular replacements keep your drinking experience fresh and your bottle in top condition. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Black Material:Plastic+Silicone Package Contents: 5 * Water Bottle Mouthpiece Replacement 5 * Filter 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.