The Contigo Replacement Filters #1352812 are designed specifically for Clybourn Water Bottles, ensuring a perfect fit and compatibility. Made of durable plastic material, these filters have a one-stage filtration system with a capacity to remove chlorine taste and odor contaminants. Suitable for household use, these water filters are lightweight at 0.5 lbs each and come in a pack of 12 units. The filtration method used is carbon/charcoal and carbon spun fiber, providing clean and refreshing water for your convenience.