We opened two shower filters. One from Amazon… and one from us. The Amazon filter had almost nothing inside — barely enough media to clean a glass of water, let alone a shower. Shower filtration isn’t regulated. Most filters do nothing. Choose a filter from a company that actually shows what’s inside. 🛒https://www.theshowerheadstore.com/collections/best-shower-head-filter | HammerHead A Shower Head Store Brand