◆ Thank you for viewing! We will handle initial defects if any. ◆ Shipping to Hokkaido, Okinawa, and remote islands requires additional postage. Please comment in the comment section if applicable. ◆ Product Description Set of 3 replacement filters for ONE STEP shower heads. 【Enjoy a clean shower time!】 The built-in filter removes debris, residual chlorine, and odors from the water. You can always use the shower with clean water and peace of mind. 【Replacement Timing】 If you continue to use the filter without replacing it, the filter will stop functioning. Therefore, we recommend replacing it after using 3000L of water.