- Prevent spills: silicone gaskets on both sides seal the lid, and the screw cap allows easy pouring or drinking. - Seamless compatibility: fits most wide-mouth water bottles with a 2.28 inch diameter, in sizes 14, 18, 40 and 64 oz. Wide neck design enhances comfort and effortless hydration. - Improved drinking experience: converts your bottle into a narrow neck design, making it easy to carry and drink on the go while reducing the risk of spills. - Easy to carry: large ring handle for portable hydration; designed to withstand high liquid and ice absorption and improve portability. Enjoy refreshments on the go without fear of breakage or deformation. - Use scenarios: ideal for work, gym, or commutes where one-handed sipping is convenient; great for outdoor activities like hiking or camping where spill-free hydration matters; useful during travel or errands to keep your bottle secure and easy to carry.