Thank you for viewing from among many products. This is a new, unopened item. 《Features》 ✮ Just add tap water to the water bottle for your dog's walks with a water purification filter (1 of these products) IN! ✮ Also OK for cat drinking water! ✮ Activated carbon removes chlorine! ✮ One water purification filter (this product) can be used for about 30 days! ✮ Replacement date sticker included! Recommended ☆ good(`・ω・´)b 【Product Overview】 ・Product Name: Common Replacement Water Purification Filter for Walking Bottles ・Quantity: 5 sets (2 pieces per set) ・Usage period: Replacement guideline 30 days (1 water purification filter) ・Size: 30 x 2.2 cm ・Application: Water purification filter for dogs and cats ・Material: Polypropylene ・Type of filter media: Activated carbon, urethane, non-woven fabric ・Water purification capacity: Free residual chlorine (73% removal rate after 10 minutes) ・Seller: Doggy Man Hayashi Co., Ltd. Additional notes) ※ Although this is a new, unopened item, there may be some damage to the package. ※ Sample images are also included in the photos. (See photos 2 and 3) ※ Please purchase after referring to the photos, and after purchase, if it is determined that the fault is not ours, we will not be able to accept returns. (As part of measures against return/exchange fraud) Please understand and purchase. ※ Please note that we will respond to inquiries on Saturdays, Sundays, and evenings (after 6 pm) on the next business day. We are looking forward to a wonderful encounter (^^) M-293KA