Our highest rate of flow delivering 50 more water than leading bottles easy to open effortless to use and leak proof when closed with purist technology for clean pure refreshmentthe purist inner surface uses a flexible glass like infusion to keep your water pure and your bottle cleanlarge screw top design is leak free and wide enough for ice cubes and powder drink mixnew moflo cap design features a wide water channel to deliver up to 50 greater flow than other leading bottles plus improv