Access to clean water anywhere: Includes a 3-stage filtration system including a sediment filter hollow fiber membrane and activated carbon filter. Removes 99.99% of bacteria parasites and reduces microplastics. Meets NSF P231 testing protocols and US EPA Standards for removal of bacteria and parasites. Ideal for traveling: Can be used as straw or with a water bottle and easily attaches to most standard disposable water bottles. Easy to use: Made with BPA-free ABS plastic materials. Assembled Product Length: 5.9 inches and width is 1.8 inches.