We currently ship to customers in the United States. Sign up for our email to be the first to know of other expansions!

Orders typically ship within 1-2 business days, and delivery typically takes 5 to 7 business days. We'll email you a tracking number as soon as your order is on its way.

Shipping is free on all orders within the continental US. Expedited shipping, and delivery to Alaska and Hawaii, are available at checkout for an added cost.

Once your order is placed and processed, we're unable to edit the items in your order or fully cancel your order as we strive to fulfill orders as quickly as possible.

If you have any questions, please email our support team at help@rainley.com. While we cannot guarantee any changes or cancellations, we will do our best to help!

Sorry about that! Check around your door, mailroom and with neighbors, since carriers sometimes mark packages delivered a little early. If it still hasn't turned up, email us at help@rainley.com with your order number and we'll help.

You can return unused items in their sealed original packaging within 30 days of delivery. We'll send you a prepaid return label, and there's no restocking fee. Opened, installed or used filters and cartridges can't be returned.

Refunds go to your original payment method within 10 business days. To start a return, email help@rainley.com.

Once you know how fast your household uses a cartridge, you can subscribe and choose your own delivery interval: every 2, 3, 4 or 5 months. Subscribers get our best pricing and early access to new products.

Log into your account and click "Manage Subscriptions" under Account Details. From there you can skip a delivery, change your delivery frequency, pause, update your shipping address or payment details, or cancel.

If you have any questions, email us at help@rainley.com.

Bossa is built for hard-water homes, but it isn't a water softener. It doesn't remove the dissolved minerals (calcium and magnesium) that make water hard, so it won't prevent limescale on fixtures.

What it does reduce is chlorine, chloramines, heavy metals, iron, rust and sediment, the contaminants most commonly associated with dry skin, frizz and color fade in hard-water homes. For truly soft water, you need a whole-house water softener.

Bossa reduces chlorine, chloramines, heavy metals, iron, rust, sediment, pipe scale, microplastics larger than 5 microns, and hydrogen sulfide.

It does not remove nitrates, arsenic, fluoride, bacteria or other biological contaminants, or dissolved minerals, and it doesn't change your home's incoming water pressure. If your well water has known nitrate or arsenic contamination, consult a certified water treatment specialist.

Most shower filter brands tell you to replace your cartridge every 90 days, or ship you a new one on a fixed schedule. Their cartridges are opaque, so a date on the calendar is the only guidance they can offer.

But two homes can run the same number of gallons through a cartridge and wear it out at very different rates, depending on their water source, hardness, treatment and household size. So we made MicronFlo transparent. As the pleats capture sediment, rust and other particles, they change from white to amber, brown or grey depending on your water, and in some homes the change is only slight. You can see what your water leaves behind and decide for yourself when it's time for a new one.

Replace by evidence. Not schedule.

There's no fixed schedule. MicronFlo is rated for up to 10,000 gallons under EPA-defined moderate contaminant conditions, but that's an upper limit, not a countdown. Your water and household size set the real number. Open the housing and look at the cartridge: its white pleats change to amber, brown or grey as they capture particles, and in some homes the change is only slight. Other signs it's time: the chlorine smell comes back, your skin and hair feel less soft, or the flow slows.

Yes. Bossa and MicronFlo are designed for both municipal and private well water. Well water often carries more sediment, iron or sulfur, which puts a heavier load on the cartridge, so it may need replacing sooner. The transparent cartridge shows you when.

Most customers notice no difference. Bossa flows at about 2 gallons per minute (7.57 L/min). If the flow slows over time, the cartridge has likely captured a lot of sediment, and it's a good moment to take a look. Bossa doesn't change your home's incoming water pressure, which is set by your utility or well system.

Yes. Bossa fits standard ½" IPS shower arms in the US and works with fixed and handheld showerheads. The MicronFlo cartridge also fits most inline shower filter housings on the market.

Bossa installs between your shower arm and showerhead in under 2 minutes, with no tools. Watch our step-by-step installation videos.

Definitely! Rainley products are renter-friendly and require no permanent modifications to your shower setup. They’re easy to install and uninstall, making them perfect for apartments or rented spaces.

Yes, Bossa and MicronFlo both feature BPA-free casing.

BPA (Bisphenol A) is a chemical commonly used in the production of plastics. Studies have shown that BPA can sometimes leach into water, particularly with heat exposure, and prolonged exposure to BPA may have potential health risks, including hormone disruption.

By choosing BPA-free materials, we ensure that Rainley products provide a safer shower experience that aligns with our commitment to your health and well-being.

No. A TDS meter measures total dissolved solids: the minerals and salts dissolved in your water. Shower filters like Bossa are built to reduce chlorine, chloramines, heavy metals and sediment, not dissolved minerals, so the reading before and after the filter will look about the same even when the filter is working well.

Better ways to understand your water:

• On city water: look up your utility's annual water quality report (the Consumer Confidence Report), usually on its website.
• On well water: a certified lab test tells you what's actually in it.
• To check chlorine: inexpensive chlorine test strips, used before and after the filter, show whether it's being reduced.
• Every day: your MicronFlo cartridge shows you what your water leaves behind each time you open the housing.