I have kept this item unopened. The box will be folded for shipping as it is bulky. If you don't need the box, I can dispose of it, so please let me know when you purchase. [Instant purchase available] Product Description: Replacement filters for Pure Crystal, approximately 2 months' worth of activated carbon filters. Gentle hydration for your cats! Always clean water! Activated carbon (with antibacterial activated carbon) absorbs chlorine odor and makes the water delicious. The non-woven fabric catches food particles, hair, dust, etc., and maintains clean water. If you notice anything unusual, consult a veterinarian immediately. This product is not intended for the treatment of diseases. Contents: 2 pieces (approximately 2 months' worth) Compatible models: Pure Crystal 1.5L/2.5L, Bloom, Grassy, Nyaro